Pipe A can fill a tank in 'a' hours. On account of a leak at the bottom of the tank it takes thrice as long to fill the tank. How long will the leak at the bottom of the tank take to empty a full tank, when pipe A is kept closed?

Options

A. `(3a)/2` hours
B. `(2a)/3` hours
C. `(4a)/3` hours
D. `(3a)/4` hours

Answer

A