Evaluate the following integral using trigonometric substitution. 12 196-x dx X What substitution will be the most helpful for evaluating this integral? A. x= 14 tan 0 B. x= 14 sec 0 C. x= 14 sin 0 Rewrite the given integral using this substitution. √√√196-x² dx = JO de X (Simplify your answers. Type exact answers.)