Which of the following statements regarding hydraulic pumps are correct?1. The gear pump consists of two close meshing gear wheels which rotate in opposite directions.2. In vane pump, as the rotor rotates, the vanes follow the contours of the casing.3. This leakage is more in vane pump compared to gear pump.

• A. 1, 2 and 3
• B. 1 and 2 only
• C. 1 and 3 only
• D. 2 and 3 only