Evaluate the integral below:

∫ 4x²e^{4x}dx

Which of the following options provides the correct answer?

A) ∫ 4x²e^{4x}dx
B) ∫ 4x²e^{4x}
C) ∫ 4x²e^{4x}dx + C
D) ∫ 4x²e^{4x}dx + K

Please select the correct option.