Answer:
cash (asset) 100 debit
unearned revenue (liability) 100 credit
Explanation:
The journal entry will erflec the cash collection fo 100
on the credit side, It will not use a revenue account.
It will be a liability account. Because the company now has the obligation to perform catering services for 100
It will recognize the careting service revenue only when those services are perform. Until that date, the payment in advance represent an obligation for the company.
So it will use unearned revenue account on the credit side.