pyq/2015/csat/37

In a group of persons traveling in a bus, 6 persons can speak Tamil, 15 can speak Hindi, and 6 can speak Gujarati. In that group, none can speak any other language. If 2 persons in the group can speak two languages only, and one person can speak all three languages, then how many persons are there in the group?

(A) 21

(B) 22

(C) 23

(D) 24