Power required (in watts) to drive a centrifugal pump is (where Hm = Manometric head in metres, w = Specific weight in N/m3, Q = Discharge of the pump in m3/s, and ηo = Overall efficiency of the pump)

Power required (in watts) to drive a centrifugal pump is (where Hm = M

1.	Power required (in watts) to drive a centrifugal pump is (where Hm = Manometric head in metres, w = Specific weight in N/m3, Q = Discharge of the pump in m3/s, and ηo = Overall efficiency of the pump)
A.	w Hm) / (Q × ηo)
B.	w Hm Q) / ηo
C.	w Q) / (Hm × ηo)
D.	w Qηo) / Hm
Answer» C. w Q) / (Hm × ηo)