-25 Evaluate the integral: dx x2vx2 + 16 (A) Which trig substitution is correct for this integral? Or = 4 sin(@) Or = -25 sec(0) Or = 4tan(0) Or = 16 sec(0) Or = 16 tan(0) Or = 16 sin(0) (B) Which integral do you obtain after substituting for I and simplifying? Note: to enter 0, type the word theta. 10 (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 x? + C