Power in kW required to drive Centrifugal pump with discharge of Q m$$^3$$/sec, Head in H mtr, specific weight of fluid as $$\omega N/m^3$$ and overall efficiency of pump as $$\eta$$ shall be

A

$$\frac{\omega H}{Qx \eta}$$

B

$$\frac{\omega QH}{\eta}$$

C

$$\frac{\omega Q}{Hx \eta}$$

D

$$\frac{\omega Qx \eta}{H}$$