Donald and May (Husband and Wife) Contributed $15,000 in Cash

Donald and May (husband and wife) contributed $15,000 in cash to their synagogue during 2015. They also donated $3,000 to a private foundation which is a nonprofit cemetery organization. They knew a 30% limit applies to contributions to such foundations. Their adjusted gross income for the year 2015 was $30,000. Donald and May's deductible contribution for the year 2015 and any carryover to next year is:

A) $18,000 with $0 carryover to next year.
B) $15,000 with $2,100 carryover to next year.
C) $7,500 with $2,100 carryover to next year.
D) $15,000 with $3,000 carryover to next year.