If a = 0, b = 0, and (a^2)b = a, then which of the following MUST equal a? Choose the correct choice from the following answers.
A) 1/(b^2) B) 0 C) b D) b^2 E) b^2 – 2b +1
A=0   0=0   A^2b-A=0   A (Ab-1)=0   Since A =0 then   Ab-1=-1   Ab=0   Ans:0
<result>B</result>
If a = 0, b = 0, and (a^2)b = a, then which of the following MUST equal a?