dx Evaluate the integral: [ 49 - ( 62 ) 2 13/2 (A) Which trig substitution is correct for this integral? 49 Ox = 36 - sin(0) Ox = - sin(0) 7 Ox = -sec(0) Ox = -sin(0) 49 Ox = -sec(0) 36 1 Ox = -sec(0) (B) Which integral do you obtain after substituting for a and simplifying? Note: to enter 0, type the word theta. (C) What is the value of the above integral in terms of ? + C (D) What is the value of the original integral in terms of ac? + C