A tank filled water is connected to another empty tank lying to the right side of the first tank. Until the level of water in the tanks become same
(a) Centre of mass of water shifts down at constant rate
(b) centre of mass of water shifts down and rate of change of shift in centre of mass decreases gradually and becomes zero
(c ) centre of mass shifts towards right as well

Options

A. only a and c are correct
B. only b and c are correct
C. only a and b are correct
D. all are correct

Answer

B