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A company performed medical services worth $4,500. At December 31, $1,500 of those services were performed but not yet recorded. The adjusting journal entry at December 31 is: Service Revenue 4.500 D & Accounts Receivable 4.500 C. Accounts Receivable S 500D & Service Revenue 1,500 Cr. Service Revenue 1.500 Dr. & Accounts Receivable 1,500 C OC Accounts Receivable 4.500 D & Service Revenue 4.500 C OD