Answer:
A. On March 12
Explanation:
The accounting entry that would have been processed by Coaster Brothers Inc on March 12 would be
Accounts Receivable Debit
Service Revenue Credit
This would have been processed on March 12 since the services were performed.
The other options such as options B and C represent collection dates of the accounts receivable and would only involve the cash and receivable accounts.
Tear end adjusting entries are only recorded if there is an unbilled services or billed services in advance.