At the beginning of December, ABC had $1,900 in supplies on hand. During the month, supplies purchased amounted to $3,900, but by the end of the month the supplies balance was only $1,600. What is the appropriate month-end adjusting entry? Multiple Choice Debit supplies $4,200, credit supplies expense $4,200 Debit supplies expense $4,200, credit supplies $4,200 Debit cash $4,200, credit supplies $4,200 Debit cash $1,600, credit supplies $1,600