Read the passage carefully and choose the correct answer

Hanoi, estimated population 3,083,800 (2004), is the capital of Vietnam. The city is located on the right bank of the Red River, 1,760 km north of Ho Chi Minh City. Through history, Hanoi was known by many names, such as Thang Long, Dong Do, Dong Quan, Bac Ha. In 1831 the Nguyen Dynasty renamed it Hanoi. Hanoi experiences the typical climate of northern Vietnam, where summers are hot and humid, and winters are cold and dry. The summer months from May to September receive the majority of rainfall in the year. The winter months from November to March are relatively dry, although spring then often brings light rains. The minimum winter temperature in Hanoi rarely goes lower than 6-7°C and summer can get as hot as 38-40°C. Hanoi experiences four full seasons in a year. Hanoi is often said to be the cultural center of Vietnam, where every dynasty has left behind their imprint. Even though some relics have not survived through wars and time, the city still has many interesting cultural and historic monuments for visitors and residents alike. Some of the prominent places are Ho Chi Minh mausoleum; Van Mieu, site of the oldest university in Vietnam; One Pillar Pagoda, and Flag Tower of Hanoi.

Hanoi is also the home of a number of museums, including Vietnamese National History Museum, the Revolution Museum and National Museum of Fine Arts. West Lake (Ho Tay) is a popular place for recreation, with small boats for hire.

Hanoi has many universities, colleges and institutes. Because many of the national universities are located in Hanoi, students from other provinces wishing to enter university often travel to Hanoi for the annual entrant examination. Such events often take place in June and July, when a large number of students and their families converge on the city a few weeks before and after the exam dates.

Trade is another strong sector of the city. The economic structure algo undergo important shifts, with tourism, finance and banking now playing an increasingly important role.

Hanoi ____.

• A. 
  had ever many different names 
• B. 
  is now called Thang Long
• C. 
  is next to Ho Chi Minh City
• D. 
  has only two seasons a year