The ratio of pipe frictional losses in the new arrangement to that in the original configuration would be

Question

Oil is being pumped through a straight pipe, the pipe length, diameter and volumetric flow rate are all doubled in a new arrangement. The pipe friction factor, however, remains constant. The ratio of pipe frictional losses in the new arrangement to that in the original configuration would be                                  

      (a)$\frac{1}{4}$                                                                   (b) $\frac{1}{2}$ 

      (c) 2                                                                    (d) 4