The cost of commodity A is 200 yuan per piece, and the selling price is 280 yuan. The cost of commodity B is 300 yuan, and the selling price is 390 yuan. Then, which of the following statements is correct is the profit rate of commodity B<$ >C. Product B earns more than Product A<$>D. Product A’s profit rate is greater than that of Product B
甲种商品的成本是每件200元，售价是280元，乙种商品的成本是300元，售价是390元，那么，下列说法中正确的是乙种商品的盈利率是多少<$>C.乙种商品赚得比甲种商品多<$>D.甲种商品的盈利率大于乙种商品
<gadget id="calculator">390 - 300</gadget>
<output>90</output>

<gadget id="calculator">90 / 300</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(3/10) * 1</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>