Demetrio's bank statement showed a balance of $909.27. He had the following outstanding checks: Check 440 for $12.95, Check 441 for $80.25, Check 442 for $10.10, and Check 443 for $28.07. The bank deducted a $15.50 service charge. Demetrio's balance in his checkbook was $793.40. What was the checkbook balance after reconciliation? a. $808.90 b. $777.90 c. $778.00 d. $631.03