Choose the best sentence that can be made from the words given.

The Arabian Desert / third-largest in the world / cover / nearly 1 million square mile of the Arabian Peninsula.

• A. 
  The Arabian Desert, is third-largest in the world, covers nearly 1 million square mile of the Arabian Peninsula. 
• B. 
  The Arabian Desert, that is third-largest in the world, covers nearly 1 million square mile of the Arabian Peninsula.
• C. 
  The Arabian Desert, third-largest in the world, covers nearly 1 million square mile of the Arabian Peninsula.
• D. 
  The Arabian Desert, third-largest in the world, therefore, covers nearly 1 million square mile of the Arabian Peninsula.