-27 Evaluate the integral: dx x2 Vx2 + 100 (A) Which trig substitution is correct for this integral? Ox = 100 sec(0) Ox = 10 tan(0) Ox = 100 tan(0) Ox = - 27 sec(0) Ox = 10 sin(0) Ox = 100 sin(0) (B) Which integral do you obtain after substituting for x and simplifying? Note: to enter 0, type the word theta. (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 a? + C