Use a change of variables to evaluate the following integral. sec 23w tan 23w dw What is the best choice of u for the change of variables? O A. u= 23w O B. u = sec 23w tan 23w O C. u = secw tan w O D. U =W O E. u= tan 23w OF. u = secw Find du. du = dw Rewrite the given integral using this change of variables. sec 23w tan 23w dw = 10)du Find the indefinite integral. sec 23w tan 23w dw =