If intensity of rainfall in cm per hour is I, percentage coefficient of run-off is P, area of catchment in square kilometres is A, the total run-off Q, is given by

If intensity of rainfall in cm per hour is I, percentage coefficient o

1.	If intensity of rainfall in cm per hour is I, percentage coefficient of run-off is P, area of catchment in square kilometres is A, the total run-off Q, is given by
A.	Q = 1.758 x 102 x API
B.	Q = 2.758 x 102 x API
C.	Q = 2.758 x 103 x API
Answer» D.