A Drive Shaft Resists Torsional Shear Stress of 45 MPa $42 \mathrm{MPa}$

A drive shaft resists torsional shear stress of 45 MPa and axial com- pressive stress of 100 MPa. The maximum shear stress is approximately: (A) $42 \mathrm{MPa}$
(B) $67 \mathrm{MPa}$
(C) $71 \mathrm{MPa}$
(D) $93 \mathrm{MPa}$