In township K, $$\frac{1}{5}$$ of the housing units are equipped with cable television. If $$\frac{1}{10}$$ of the housing units, including $$\frac{1}{3}$$ of those that are equipped with cable television, are equipped with video I cassette recorders, what fraction of the housing units have neither cable television nor videocassette recorders?
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A$$\frac{23}{30}$$
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B$$\frac{11}{15}$$
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C$$\frac{7}{10}$$
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D$$\frac{1}{6}$$
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E$$\frac{2}{15}$$
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正确答案: A