1. 

Statements: All birds are tall. Some tall are hens.

Conclusions:

I.  Some birds are hens.

II. Some hens are tall.

A. Only conclusion I follows
B. Only conclusion II follows
C. Either I or II follows
D. Neither I nor II follows
E. Both I and II follow

Answer: Option B

Explanation:

Since the middle term 'tall' is not distributed even once in the premises, no definite conclusion follows. However, II is the converse of the second premise and so it holds.