Choose A, B, C, or D to indicate the sentence that is closest in meaning to each of the following questions: The diagram shows it is hotter in summer than in winter in the northern hemisphere. 

• A. 
  As can be seen from the diagram, the weather of the northern hemisphere is hotter in summer than that in winter.
• B. 
  According to the diagram, in the northern hemisphere is colder in winter than in summer.
• C. 
  The diagram illustrates the trend of the climate in the northern hemisphere is that summer is cooler than winter.
• D. 
  As we can see from the diagram, the climate of the northern hemisphere is hotter in summer more than in winter.