Water at 250C is following through a 1.0 km long G.I. pipe of 200 mm diameter at the rate of 0.07 m3/s. If value of Darcy friction factor for this pipe is 0.02 and density of water is 1000 kg/m3, the pumping power (in kW) required to maintain the flow is
(a) 1.8 (b) 17.4
(c) 20.5 (d) 41.0