In a survey of 248 people, 156 are married, 70 are self-employed, and 25 percent of those who are married are self-employed. If a person is to be randomly selected from those surveyed, what is the probability that the person selected will be self-employed but not married?
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A$$\frac{1}{8}$$
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B$$\frac{4}{31}$$
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C$$\frac{117}{248}$$
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D$$\frac{1}{4}$$
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E$$\frac{31}{117}$$