Answer:
c. Decrease liabilities and increase revenues
Explanation:
The correct adjusting journal entry which shall be recorded by the Duluth Co. in accounts in respect of advance income as as at December 31, is given below:
Debit Credit
Advance income(Liability) $2,000
($6,000/6*2)
Revenue $2,000
Since the liability has been debited in the above mentioned journal entry, which mean that it has been decreased and the revenue has been credited, which means that it has been increased.
So based on the above discussion, the answer is c. Decrease liabilities and increase revenues