How many lists can exist in parallel in an interactive reporting?

A. An Interactive report can have 1 basic list and up to 20 Secondary lists. 
B. An Interactive report can have 1 basic list and up to 19 Secondary lists. 
C. An Interactive report can have 1 basic list and up to 19 Secondary lists. 
D. An Interactive report can have 1 basic list and up to 21 Secondary lists.

Ans: A