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题目材料:
In the winter, $$\frac{2}{3}$$ of the cardinal sightings,$$\frac{1}{2}$$ of the junco sightings, and $$\frac{1}{4}$$ of the sparrow sightings were in January. What fraction of the total number of sightings of these three bird species in the winter were in January?
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A$$\frac{1}{4}$$
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B$$\frac{1}{3}$$
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C$$\frac{1}{2}$$
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D$$\frac{2}{3}$$
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E$$\frac{3}{4}$$
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