Answer:
a) Assets increase by $ 10,000; revenues increase by $ 10,000
Step-by-step explanation:
The billing to a client results in an increase in receivables, an asset which is a debit. the consulting work is a revenue to the organization which is a credit.
The other options are not applicable, because the scenario (b) results in increase in cash collection of receivables which is not the transaction.
The scenarios (c) and (d) are not relevant because the transaction has no impact on liabilities