问题:

定义集合运算:A⊗B={z|z=xy,x∈A,y∈B}.设A={0,2},B={x|x 2-3x+2=0},则A⊗B=(  )
A.{0,-2,-4} B.{0,2,-4} C.{0,2,4} D.{0,1,2}

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