Use the following information to answer the given question
\(\begin{array}{c|c} & D\\ \hline \text{Balance as peer cash book} & 8,400\\ \text{Banking charges} & 300 \\ \text{standing order paid} & 2,500 \\ \text{Unpresented cheques} & 2,800 \end{array}\)
The adjustment cash book balance is