A stone is dropped into a well in which the level of water is h below, the top of the well. If \[v\] is velocity of sound, then time T after which the splash is heard is equal to

• A.   \[\frac{2h}{v}\]                                              
• B.  \[\sqrt{\frac{2h}{v}}+\frac{h}{g}\]
• C.  \[\sqrt{\frac{2h}{g}}+\frac{h}{v}\]                            
• D.  \[\sqrt{\frac{h}{2g}}+\frac{2h}{v}\]