V16 - 12 Evaluate the integral: (A) Which trig substitution is correct for this integral? Or = 4 sec(0) Or = 4 tan(0) Of = 16 sec(8) Or = 4 sin(0) Or = 16 tan(0) Or = 16 sin(0) (B) Which integral do you obtain after substituting for a and simplifying? Note: to enter 0, type the word theta. OP (C) What is the value of the above integral in terms of 0? + C (D) What is the value of the original integral in terms of x? + C