A solid shaft has diameter 80 mm. It is subjected to a torque of 4 KNm. The maximum shear stress induced in the shaft would be
(a) 75/p N/mm2
(b) 250/p N/mm2
(c) 125/p N/mm2
(d) 150/p N/mm2
(a) 75/p N/mm2
(b) 250/p N/mm2
(c) 125/p N/mm2
(d) 150/p N/mm2