a. Use the Product Rule to find the derivative of the given function. b. Find the derivative by expanding the product first. f(x) = (x - 3)(3x + 5) a. Use the product rule to find the derivative of the function. Select the correct answer below and fill in the answer box(es) to complete your choice. O A. The derivative is (x - 3). O B. The derivative is (x - 3)(3x + 5) + O C. The derivative is (x - 3)(3x + 5) ( ) O D. The derivative is ( )x(3x + 5). O E. The derivative is (x - 3) ( ) + (3x +5)( D b. Expand the product. (x - 3)(3x +5) = (Simplify your answer.) Using either approach, (X - 3)(3x + 5) =0