Three 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 eggs are hens.
All hens are birds.
All birds are crows.
Conclusions:
I. All eggs are crows.
II. All hens are crows.
III. Some crows are birds.