Fitness Machines reported credit sales of $880,000 and bad debt expense of $250,000 for 2021 . Accounts receivable had a balance of $1,400,000 at the beginning of 2021 and $1,350,000 at the end of 2021. Assuming there are no write-offs made during 2021 , how much cash was collected from customers during 2021? Select one: a. $930,000 b. $630,000 c. $1,180,000 d. $680,000