若\( \lim\limits_{x \to 0} \frac{5\si - 考试宝

单选题若\( \lim\limits_{x \to 0} \frac{5\sin mx}{2x} = \frac{4}{3} \)，则\( m \)的值为？

A、 \( \frac{4}{9} \)

B、 \( \frac{2}{3} \)

C、 \( \frac{8}{15} \)

D、 \( \frac{9}{4} \)

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