Medley of Equivalences

Assume that A and B are binary random variables. Which of the following expressions are equivalent to \Pr(A=0 | B=0)?

-- $\displaystyle{\frac{\Pr(B=0~|~A=0)\Pr(A=0)}{\Pr(A=0,~B=0) + \Pr(A=1,~B=0)}}$ $\displaystyle{\frac{\Pr(A=0)}{\Pr(B=0)}}$ $\displaystyle{\frac{\Pr(A=0,~B=0)}{\Pr(A=0)}}$ $\displaystyle{\frac{\Pr(A=0,~B=0)}{\Pr(B=0)}}$ $\displaystyle{\frac{\Pr(A=0,~B=0)}{\Pr(B=0,~A=1) + \Pr(B=0,~A=0)}}$ $\displaystyle{\Pr(B=0~|~A=0) \Pr(A=0)}$ $\displaystyle{\frac{\Pr(B=0~|~A=0)\Pr(A=0)}{\Pr(B=0)}}$ $\displaystyle{\Pr(B=0~|~A=0)}$ $\displaystyle{\frac{\Pr(B=0~|~A=0)\Pr(A=0)}{\Pr(B=0~|~A=0)\Pr(A=0) + \Pr(B=0~|~A=1)\Pr(A=1)}}$