Use substitution to find the indefinite integral. (1-1) 301-152 d dt 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 yo OA. Substitute u for the quantity under a root or raised to a power. Let u= so that du= (dt OB. Substitute u for the exponent on e. Let u= so that du= dt. C. Substitute u for the quantity in the denominator. Let u= so that du= dt.