XYZ Music Store sells new CDs, n, for $ 13.50, and used $6.50 .The store eamed $ 456 revenue last month. The store sold 14 more used CDs than new CDs. Which system of equations represents this scenario?
A.6.5n +13.5U=456;u=n-14
B.13.5n+6.5u=456;u=n+14
C.6.5n +13.5u=456;u+n+14
D.13.5n+6.5u=456;u=n -14