The integral, / f(x) dx = 3x sin(3x2) da can be solved using the method of u substitution where V cos(3x2) 2 du - 3x sin(3x2 ) dx. Which one of the following is the evaluation of the integral / f(u) du? Select one alternative: O - Vu+C O Vu+C O + C Vu 0 - 2Vu + C