Given below are two statements, one labelled as Assertion A and the other labelled as Reason R:Assertion A: The Greek historian Herodotus tells us that 'India was the twentieth and most prosperous satrapy (province) of the Persian empire'.Reason R: By the time of Alexander's invasion (327-326 B.C.) all the Persian impact on India had become non-existent.In the context of the above statements, which one of the following is correct?

• A. Both A and R are true, and R is the correct explanation of A.
• B. Both A and R are true, but R is not the correct explanation of A.
• C. A is true, but R is false.
• D. A is false, but R is true.