Which statement is most appropriate for the integral intsinx3^xdx'? А. It should be evaluated using integration by substitution as the derivative of 3^x is in the integral,
B. It should be evaluated using integration by parts as 3^x is a difficult function to integrate.
C. It should be evaluated using integration by substitution as the derivative of sin x is in the integral.
D. It should be evaluated using integration by parts as the integral is a product of two different types of functions, neither of whose derivatives are in the
integral