Which of the following is the correct differentiation of the function 3x²eˣ)+x³+5)eˣ?

A) 3x²eˣ)+x³+5)eˣ
B) 3x²eˣ)+x³+5)eˣ+eˣ
C) 6xeˣ)+3x²+1)eˣ
D) 6xeˣ)+3x²+1)eˣ+eˣ