$1.$ On December $31,2020,$ Coolwear, Inc. had a balance in its prepaid insurance account of $$48,400.$ During $2021,$ $$86,000$ was paid for insurance. At the end of $2021,$ after adjusting entries were recorded, the balance in the prepaid insurance account was $42,000.$ Insurance expense for $2021$ was:

A$)$ $$6,400.$

B$)$ $$134,400.$

C$)$ $$86,000.$

D$)$ $$92,400.$