The number of girls in a class are 1.5 times as many as that of boys. The number of girls learning French is the same as that of boys. The number of students learning French in the whole class accounts for one tenth of the total number. What is the proportion of boys who do not learn French in the class?
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A$$\frac{7}{9}$$
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B$$\frac{8}{11}$$
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C$$\frac{7}{15}$$
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D$$\frac{8}{17}$$
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E$$\frac{7}{20}$$
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正确答案: E