Two statements are given followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.

Statements:
All pigeons are crows.
No crow is a bird.

Conclusions:
I. Some crows are pigeons.
II. Some pigeons are birds.
III. No pigeon is a bird

A

Only conclusions I and II follow.

B

Either conclusion II or III follows.

C

Only conclusions I and III follow

D

Only conclusions II and III follow.