gloh bounded by the graphs of f and g and the lines x=a and x=b is revolved about the y axis. Write the integr that equals the volume of the resulting solid. Identify the integral. Choose the correct answer below. b OA. 2 a b 2x(f(x)-g(x))dx OB. 2(g(x)- O c. a b 2(g(x) - f(x))dx 2x(9 a b 2xx(g(x) - f(x))dx OD. 2x(f(x)-g(x))dx a