In a nationwide poll, N people were interviewed.If $$\frac{1}{4}$$ of them answered "yes" to question 1, and of those, $$\frac{1}{3}$$ answered "yes" to question 2, which of the following expressions represents the number of people interviewed who did not answer "yes" to both questions?
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A$$\frac{N}{7}$$
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B$$\frac{6}{7}N$$
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C$$\frac{5}{12}N$$
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D$$\frac{7}{12}N$$
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E$$\frac{11}{12}N$$
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正确答案: E