Which of the following are correct order of nucleophilicity in meoH

Question

a) $OH^-$ > $HOO^-$

b) $ETO^-$ > $OH^-$ > $CH_3COO^-$

c) $SH^-$ > $OH^-$ > $NH_2^-$

 

$\begin{array}{1 1} a \\ b \\ c\\ d \end{array}$