Some statements are given followed by three conclusions I, II and III. You have to consider the statements to be true, even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions if any, follow from the given statements. Indicate your answer.
Statements :
All chickens are birds. Some chickens are hens. Female birds lay eggs.
Conclusions :
I. All birds lay eggs.
II. Some hens are birds.
III. Some chickens are not hens.