Question: for each separate case below, follow the three-step process for adjusting the unearned revenue liability account at december 31.step 1: determine what the current account balance equals. step 2: determine what the current account balance should equal. step 3: record the december 31 adjusting entry to get from step 1 to step 2.assume no other adjusting entries are made during the year. a) the krug company collected $9,000 rent in advance on november 1, debiting cash and crediting unearned rent revenue. the tenant was paying 12 months' rent in advance and occupancy began november 1.unearned rent revenuestep 1: determine what the current account balance equals. step 2: determine what the current account balance should equal. step 3. record the december 31 adjusting entry to get from step 1 to step 2.b) the company charges $100 per month to spray a house for insects. a customer paid $400 on october 1 in advance for four treatments, which was recorded with a debit to cash and a credit to unearned services revenue. at year-end, the company has applied three treatments for the customer. unearned services revenuestep 1: determine what the current account balance equals. step 2: determine what the current account balance should equal step 3: record the december 31 adjusting entry to get from step 1 to step 2.c) on september 1, a client paid the company $30,000 cash for six months of rent in advance (the client leased a building and took occupancy immediately). the company recorded the cash as unearned rent revenueunearned rent revenuestep 1: determine what the current account balance equals step 2: determine what the current account balance should equal. step 3: record the december 31 adjusting entry to get from step 1 to step 2.