At a point A in a pipe lilne carrying water, the diameter is 1 m, the pressure 98 KPa and the velocity 1 m/s. At a point B, 2 m higher than A, the diameter is 0.5m and the pressure 20 KPa. The direction of flow would be

A

A to B

B

B to A

C

Cannot be ascertained from data

D

None of these