AMC 10A 2007 Problem 2

Past Contests AMC 10 2007 Part A
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1

Define a @ b=a b-b^{2} and a \# b=a+b-a b^{2}. What is \dfrac{6 @ 2}{6 \# 2} ?

Answer Choices
A. -\dfrac{1}{2}
B. -\dfrac{1}{4}
C. \dfrac{1}{8}
D. \dfrac{1}{4}
E. \dfrac{1}{2}