\f222- 2 Evaluate the integral: dx V9 - 22 (A) Which trig substitution is correct for this integral? Ox = 3 tan(0) Ox = 9 sec(0) Ox - 9 tan(0) Ox = 3 sec(0) Ox = 3 sin(0) Ox = 9 sin(0) (B) Which integral do you obtain after substituting for a and simplifying? Note: to enter 0, type the word theta. do (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 ac? + C O O