Blade, Inc. has the following account balances at Dec 31 of the current year. What is the correct missing balance for Retained Earnings?

a. $3,420 debit

b. $21,100 credit

c. $3,420 credit

d. $21,000 debit

e. $ 6,620 debit

Account Cash Accounts Receivable Prepaid Insurance Supplies Accounts Payable Common Stock Retained Earnings ??? Service Revenue Salaries Expense Utilities Expense Totals Debit $ 14,400 3,400 3,800 1,140 640 1,140 Credit $6,400 6,300 8,400