A streamlined body falls through air from a height \[h\] on the surface of a liquid. If \[d\] and \[D(D>d)\] represents the densities of the material of the body and liquid respectively, then the time after which the body will be instantaneously at rest, is

• A. \[\sqrt{\frac{2h}{g}}\]
• B. \[\sqrt{\frac{2h}{g}.\frac{D}{d}}\]
• C. \[\sqrt{\frac{2h}{g}.\frac{d}{D}}\]        
• D. \[\sqrt{\frac{2h}{g}}\left( \frac{d}{D-d} \right)\]