问题详情

Eight years from now, Carrie’s age will be twice Ben’s age. If Carrie’s current age is C and Ben’s current age is B, which of the following represents Carrie’s current age？
A.B
B.B+4
C.B+8
D.2B+8
E.3B请帮忙给出正确答案和分析，谢谢！