Use substitution to find the indefinite integral. 8 dm (8m - 1)8 Describe the most appropriate substitution case and the values of u and du. Select the correct choice below and fill in the answer boxes within your choice. O A. Substitute u for the exponent on e. Let u= so that du = ( )dm. O B. Substitute u for the quantity under a root or raised to a power. Let u = so that du = ( )dm O C. Substitute u for the quantity in the denominator. Let u = so that du = ()dm. 8 dm (8m - 1)8 4