Answer:
D. credit to Unearned Warranty Revenue of $1,400
Step-by-step explanation:
Unearned extended warranty revenue can be defined as the way in unearned revenues is reflected in accrued liabilities in the balance sheets which in turn lead to the revenue from separately priced as well as self-insured service contracts to be deferred at the point of sale.
Therefore the journal entry to record this transaction would include:
credit to Unearned Warranty Revenue of $1,400