Four Journal Entries Are Presented Below $\begin{array}{lcc}\text { Cash } & 12,200 & \\\text { Service Revenue } & & 12,200\end{array}$

Four journal entries are presented below.Write an explanation for each entry in the space provided below the entry.
A)
$\begin{array}{lcc}\text { Cash } & 12,200 & \\\text { Service Revenue } & & 12,200\end{array}$

B) $\begin{array}{llr} \text { Accounts Receivable } &17,500\\ \text {Service Revenue } &&17,500\\\end{array}$

C)
$\begin{array}{lcl}\text { Cash }& 16,900 \\\text { Accounts Receivable } & & 16,900\end{array}$

D)
$\begin{array}{lll}\text { Cash } & 1,830 & \\\text { Deposits Received in Advance } & &1,830\end{array}$