Study the given venn diagram and answer the question that follows.

How many residential super-specially hospitals are institutes?

Correct option is C

How many residential super-specially -common in residential AND super-specially = 56, 3, 9, 13

hospitals also  = in (56, 3, 9, 13)  = 9, 13

institutes = in (9, 13) = 9

final answer is option c.