A multi-disc clutch employs 3 steel and 2 bronze discs having outer diameter of 300mm and inner diameter of 175mm. if the coefficient of friction is 0.25 and axial force on each pair of surfaces is 5kN, then the torque transmitted (assuming uniform wear) is
(a) 416.6Nm (b) 887.5Nm
(c) 1093.75 Nm (d) 593.75Nm