The balance in the prepaid insurance account, before adjustment at the end of the year, is $18,630. Journalize the adjusting entry required under each of the following alternatives for determining the...

The balance in the prepaid insurance account, before adjustment at the end of the year, is $18,630. Journalize the adjusting entry required under each of the following alternatives for determining the amount of the adjustment: (a) the amount of insurance expired during the year is $15,300; (b) the amount of unexpired insurance applicable to future periods is $3,330.