The velocity of a ball, which is projected with an initial velocity u, to a height h, its maximum height is

Question

$\begin{array}{1 1} (a)\;\text{zero} \\ (b)\; \frac{u^2}{2g} \\ (c)\; \frac{-u^2}{2g} \\ (d)\; \text{cannot be determined } \end{array}$