A manager has $6,000 budgeted for raises for 4 full-time and 2 part-time employees. Each of the full-time employees receives the same raise, which is twice the raise that each of the part-time employees receives. What is the amount of the raise that each full-time employee receives?
(A) $750
(B) $1,000
(C) $1,200
(D) $1,500
(E) $1,650