You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follow(s) from the given statements
1) if only conclusions I follows
2) if only conclusions II follows
3) if either I or II follows
4) if neither I nor II follows
5) if both I and II follow
Statements: All A are Z
All Z are X
All Y are A
Conclusions: I.All A are Y
II All Y are X

Explanation

2, if only conclusion II follows