If a=-1 and b=3, then $$\frac{a^2-ab}{b}=$$

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If a=-1 and b=3, then $$\frac{a^2-ab}{b}=$$

A、-2
B、$$-\frac{2}{3}$$
C、$$\frac{4}{3}$$
D、2
E、0

答案：D

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