Answer: Option B
:
B
x $\to$ number of apples Ashu has
y $\to$ number of apples Yacob has
z $\to$ number of apples Safina has
$x<y<z$
x + y + z = 12
$\begin{array}{cccc}Cases& x& y& z\\ \left(a\right)& 1& 2& 9\\ \left(b\right)& 1& 3& 8\\ \left(c\right)& 1& 4& 7\\ \left(d\right)& 1& 5& 6\\ \left(e\right)& 2& 3& 7\\ \left(f\right)& 2& 4& 6\\ \left(g\right)& 3& 4& 5\end{array}$
Statement (1): INSUFFICIENT. We are told that z - x is less than or equal to 5. This rules out scenarios (a) through (c), but the last four scenarios still work. Thus, y could be 3, 4, or 5.
Statement (2): INSUFFICIENT. We are told that xyz is less than 36. y could be 2, 3, 4, or 5.
Statements (1) and (2) together: SUFFICIENT. Only scenario (d) survives the constraints of the two statements. Thus, we know that y is 5.
The correct answer is (B): BOTH statements TOGETHER are sufficient to answer the question, but neither statement alone is sufficient.