21) ABC Company had the following transactions during the month. What would be the total amount of expenses for the month if ABC Company uses the accrual basis method?

a. On the first of the month, paid $2,400 for insurance for the next 12 months.

b. Received $1,200 for services to be performed equally over the next 6 months.

c. Paid $500 for the current month's rent.

d. Paid $200 cash for office supplies.

e. Paid $550 in Salaries Expense.

f. Received $1,300 in cash for service revenue earned this month.