DEF event planning services inc. records deferred expenses and deferred revenues using alternative treatments. it makes adjusting entries as needed to bring its to the full accrual basis once a uear. on december $15$ it collected $$3000$ from a customer in advance for a series of events that will start late December and end in March. at the end of the year, it had perfomred approximately $10\%$ of the services for its customer. What is the adjusting entry that woll be done at the end of the year $12-31-24?$