In a disc clutch, the inside and outside radii of the clutch plate are 50 and $100 \mathrm{~mm}$, respectively. If the axial force exerted on the disc is $4 \mathrm{kN},$ the maximum pressure experienced by the clutch plate in $\mathrm{N} \mathrm{mm}^{-2}$ under uniform wear conditions is
(A) 0.13
(B) 0.17
(C) 0.25
(D) 0.51
In a disc clutch, the inside and outside radii of the clutch plate are 50 and $100 \mathrm{~mm}$, respectively. If the axial force exerted on the disc is $4 \mathrm{kN},$ the maximum pressure experienced by the clutch plate in $\mathrm{N} \mathrm{mm}^{-2}$ under uniform wear conditions is
(A) 0.13
(B) 0.17
(C) 0.25
(D) 0.51