(*> > >) For each of the indefinite integrals below, select which of the following trig substitutions would be most helpful in evaluating the integral. Do not evaluate the integrals. A. x = 4 tan 0 B. x = 4 sin 0 C. I = 4 sec 0 ? ~ 1. (27 - 16)5/2 dx ? " 2 (16 + x2)3 ? v 3. V16 - 12 ? v 4. Vx2 - 16 dr ? ~ 5. x'v16 + x2 dx