D and M Are Divorcing

D and M are divorcing.D loves his two children and agrees to support them with the amount of $500 per month, ending on the later of the child's 18th birthday or 22nd birthday, if the child pursues a full-time college education.He further agrees to pay his ex-wife $1,500 per month for her maintenance and support, ending on her death or remarriage.These agreements are contained in their divorce decree.D pays his ex-wife the $2,000 per month under the terms of the decree, using one check.How much of each $2,000 check is a nondeductible child support expense for D?

A) $2,000
B) $500
C) $0
D) Cannot figure amount without information on amount wife actually uses for child support