please write every answer with question number

\fQuestion 12 V 100 - 22 Evaluate the integral: da 10x2 (A) Which trig substitution is correct for this integral? Ox - 100 tan(0) Ox - 100 sin(0) Ox = 100 sec(0) Ox = 10 sec(0) Ox - 10 tan(0) Ox = 10 sin(0) (B) Which integral do you obtain after substituting for a and simplifying? Note: to enter 0, type the word thetal 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 a? C