1.  Questions: Among five friends, who is the  tallest ?
Statements:

I.  D is taller than A and C.
II. B is shorter than E but taller than D.

A. I alone is sufficient while II alone is not sufficient.
B. II alone is sufficient while I alone is not sufficient.
C. Either I or II is sufficient.
D. Neither I nor II is sufficient.
E. Both I and II are sufficient.

Answer: Option E

Explanation:

From I, we have : D > A >, D > C. From II, we have : E > B > D. Combining the above two, we get E > B > D >A > C or E > B > D > C > A. Thus, E is the tallest.