Select the correct indirect form of the given sentence.
Ravi asked, “Ritu, how many sets of class 12 practice papers have you finished?”

A

Ravi asked Ritu how many sets of class 12 practice papers she had finished.

B

Ravi asked Ritu how many sets of class 12 practice papers she has been finishing.

C

Ravi asked Ritu how many sets of class 12 practice papers was she finishing.

D

Ravi asked Ritu how many sets of class 12 practice papers had she been finishing.