A hydraulic circuit uses a pump having a fixed displacement volume of $12.5 \mathrm{~cm}^{3}$ rev ${ }^{-1}$ driven at 1500 rpm. The pump has a volumetric efficiency of $85 \%$ and an overall efficiency of $75 \% .$ If the system pressure is set at $15 \mathrm{MPa}$ by the relief valve, the power required to drive the pump in $\mathrm{kW}$ will be
(A) 2.99
(B) 4.53
(C) 5.31
(D) 7.53
A hydraulic circuit uses a pump having a fixed displacement volume of $12.5 \mathrm{~cm}^{3}$ rev ${ }^{-1}$ driven at 1500 rpm. The pump has a volumetric efficiency of $85 \%$ and an overall efficiency of $75 \% .$ If the system pressure is set at $15 \mathrm{MPa}$ by the relief valve, the power required to drive the pump in $\mathrm{kW}$ will be
(A) 2.99
(B) 4.53
(C) 5.31
(D) 7.53