. The velocity of a small ball of mass \(M\) and density \(d\), when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is \(\frac{d}{2}\), then the viscous force acting on the ball will be:
(A) \(\frac{M_{g}}{2}\)
เคน \(M g\)
c \(\frac{3}{2} M g\)
D \(2 M g\)