单选题 Diana bought a stereo for $530, which was the retail price plus a 6 percent sales tax. How much money could she have saved if she had bought the stereo at the same retail price in a neighboring state where she would have paid a sales tax of 5 percent?
(A) $1.00 (B) $2.65
(C) $4.30 (D) $5.00
(E) $5.30