A cylinder has a radius of 6x + 4 and a height of 8x + 7. Which polynomial in standard form best describes the total volume of the cylinder? Use the formula = ^2h for the volume of a cylinder.
a. 288^3 + 636^2 + 464 + 112
b. 288^3 − 636^2 + 464 + 112
c. 288^3 + 636^2 + 464 + 112
d. 288^3 + 636^2 − 464 + 112