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
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