The correct option is
A mgR(1 + )
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)
Forces due to friction and gravity will be as shown in figure, apart from this tension force T and normal force will also be acting.
By work energy theorem ,
Work done by all forces = Change in K.E
Wmg+Wfriction+WT=0 −mgR−\int_{\theta=0}^{\theta=90} \mu mgsin\theta d\theta +W_{T}=0
Onsolving,W-{T}=mgR(1+\mu)$