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题目材料：
If one item is to be randomly selected from the items whose manufacturing cost is greater than $140, what is the probability that the item selected will be one whose manufacturing time is greater than 60 minutes?
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A.$$\frac{3}{8}$$
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B.$$\frac{1}{2}$$
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C.$$\frac{5}{8}$$
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D.$$\frac{2}{3}$$
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E.$$\frac{3}{4}$$
E显示答案
