Abu, a debtor to Dania, owed ₦10,500 at the start of the month. He paid cash of ₦40,005 during the month and received additional credit sales of ₦20,000.Using the information, Abu's balance at the end of the month is

A. ₦30,505 cr.  
B. ₦9,505 cr.
C. ₦9,505 dr.
D. ₦30,500 dr.

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Correct Answer: A