Last year the price per share of Stock X increased by k percent and the earnings per share of Stock X increased by m percent, where k is greater than m. By what percent did the ratio of price per share to earnings per share increase, in terms of k and m?
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A$$\frac{k}{m}\%$$
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B(k-m) %
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C$$\frac{100(k-m)}{100+k}\%$$
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D$$\frac{100(k-m)}{100+m}\%$$
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E$$\frac{100(k-m)}{100+k+m}\%$$