AB两种商品原来价格之比为7：3，如果它们的价格分别上涨70元，则价格之比变成7：4．问这两种商品原来的价格各是多少元？

The earnings multiplier model, derived from the dividend discount model, expresses a stock's P/E ratio (P₀/E₁) as the:

A. expected dividend in one year divided by the difference between the required return on equity and the expected dividend growth rate.
B. expected dividend payout ratio divided by the sum of the expected dividend growth rate and the required return on equity.
C. expected dividend payout ratio divided by the difference between the required return on equity and the expected dividend growth rate.