An installation consists of an electric motor which drives a water pump to lift 75 L of water per second to a height of 5m, where water is disbursed at neglible speed. If the motor consumes a power of 5 kW, then what is the efficiency (%) of the installation?
[g=10ms⁻²]
a. 69%
b. 39%
c. 93%
d. 96%