Which of the following statements is also true?

The statement “Raphael runs every Sunday” is always true.

Which of the following statements is also true?
A . If Raphael does not run, then it is not Sunday.
B . If Raphael runs, then it is Sunday.
C . If it is not Sunday, then Raphael does not run.
D . If it is Sunday, then Raphael does not run.
E . If it is Sunday, it is impossible to determine if Raphael runs.

Answer: A

Explanation:

The statement “Raphael runs every Sunday” is equivalent to “If it is Sunday, Raphael runs.” The contra positive of a true statement is also true. The contra positive of “If it is Sunday, Raphael runs” is “If Raphael does not run, it is not Sunday.”