Chapter 22

Lana has registered retirement savings plan(RRSP) contribution room of $18450, Her spouse has RRSP contribution room of $8500 and has contributed $4400 to his RRSP this year. How much can Lana conribute to a spousal RRSP plan if she contributed $8000 to her own plan?
A, 18450, B 10450, C 4100, D, 8500.
请问老师，为什么正确答案是B.谢谢。