The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by (where T = Number of teeth on the sprocket)

A. p = D sin (90°/T)

B. p = D sin (120°/T)

C. p = D sin (180°/T)

D. p = D sin (360°/T)

Please do not use chat terms. Example: avoid using "grt" instead of "great".