If T₁ and T₂ are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to

A. T₁ - T₂ + Tc

B. T₁ + T₂ + Tc

C. (T₁ - T₂ + Tc)/2

D. (T₁ + T₂ + Tc)/2

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