Line P has a positive slope and a positive y-intercept. Line Q also has a positive slope and a positive y-intercept. The two slopes and the two y-intercepts are four different numbers, none equal. Lines P & Q have a single intersection point --- what is the full set of possible quadrants in which the intersection point could be?
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AI only
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BI & III only
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CI & II only
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DI & II & III only
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Eall four quadrants possible
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正确答案: D