Statements: Some birds are stones.
Some tigers are birds.
All stones are grapes.
Conclusions: I Some stones are birds.
II Some stones are not birds.
III Some grapes are birds.
IV. Some tigers are stones.

Options

A. I, II and III follow
B. I, III and IV follow
C. Either I or II and III follow
D. I and III follow

Answer

D

Explanation

Some birds are stones `to` on conversion `to` Some stone are birds. Hence I follows. Also, Some birds are stones + All stones are grapes =I+A=I Some birds are grapes `to` on conversion `to` Some Hence, III follows.