After Sally Purchased $5,000 of Merchandise from Bob,Sally Discovered $500

After Sally purchased $5,000 of merchandise from Bob,Sally discovered $500 of defective merchandise.Record the entry for the return.The company uses the gross method,the periodic method and the voucher system.

A)
$$\begin{array}{l}\begin{array} { | l | l | } \hline \text { Vouchers Payable }& 500 \\\hline \text { Vouchers Payable } & 500 \\\hline\end{array}\end{array}$$
B)
$$\begin{array} { | c | r | } \hline \text { Vouchers Payable } & 5,000 \\\hline \text { Vouchers Payable } & 4,500 \\\hline \text { Purchases Returns \& Allow. } & 500 \\\hline\end{array}$$
C)
$$\begin{array} { | l | r | } \hline \text { Vouchers Payable } & 4,500 \\\hline \text { Purchases Returns \& Allow. } & 500 \\\hline \text { Vouchers Payable } &5,000 \\\hline\end{array}$$
D) None of these answers is correct.