The elements in set B are twice as many as those in set A, and the intersection of AB is empty. $$\frac{1}{3}$$of the elements in set C come from A, and $$\frac{1}{4}$$from B. What is the proportion of intersection of A and C in set C?
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A$$\frac{1}{5}$$
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B$$\frac{2}{5}$$
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C$$\frac{1}{6}$$
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D$$\frac{1}{3}$$
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E$$\frac{1}{2}$$
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正确答案: B