Answer: D. debit Supplies Expense $4,200; credit Supplies $4,200
Step-by-step explanation:
Based on the information given in the question, the adjusting entry needed at the end of the period will be to debit Supplies Expense $4,200 and credit Supplies $4,200.
The supplies expenses of $4200 was gotten as:
= $6000 - $1200
= $4800
Therefore, the correct option is D.
.