Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.

People want to keep fit. Many people take up sports.

A. Many people take up sports so as to keep fit.

B. Many people want to keep fit so as to take up sports.

C. Many people want to keep fit in order to take up sports.

D. Although people want to keep fit, they take up sports.