A wooden cylinder of diameter 4 r, height H and density `rho//3` is kept on a hole of diameter 2 r of a tank, filled with water of density `rho` as shown in the
If height `h_(2)` of water level is further decreased, then
A. cylinder will not move up and remains at its original position.
B. for `h_(2)=h//3`, cylinder again starts moving up
C. for `h_(2)=h//4`, cylinder again starts moving up
D. for `h_(2)=h//5` cylinder again starts moving up
