A body initially at rest and sliding along a frictionless track from a height h (as shown in the figure) just completes a vertical circle of diameter AB = D. The height h is equal to <br>

Question

https://clay6.com/mpaimg/773_a.jpg

( A ) D
( B ) $\frac{3}{2}D$
( C ) $\frac{7}{5}D$
( D ) $\frac{5}{4}D$