\(x\,\, \vdots \,\,15\) và \(45 < x < 136\)
A.\(x \in \left\{ {60;\,65;\,75;\,90;\,105;\,120;\,135} \right\}\)
B.\(x \in \left\{ {45;\,60;\,75;\,90;\,105;\,120;\,135} \right\}\)
C.\(x \in \left\{ {50;\,60;\,75;\,90;\,105;\,120;\,135} \right\}\)
D.\(x \in \left\{ {60;\,75;\,90;\,105;\,120;\,135} \right\}\)

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