A vertical spring has unstretched length $L_0,$ as shown in Figure $1.$ A block is attached to the top of the spring and slowly lowered until it is at rest and the spring has length $L_{eq},$ as shown in

Figure $2.$ The block is then pushed down until the spring is compressed to length $L_{\text{c}\text{o}\text{m}\text{p}},$ as shown in Figure $3,$ and then released. After release, at what height will the kinetic energy of the block be maximum?

$($A$)L0$

$($B$)$ Leq

$($C$)$ Lcomp

$($D$)\frac{L_{sq}{L}_{\text{c}\text{o}\text{m}\text{m}}}{2}$