Concept:In single-entry accounting, missing figures like purchases are obtained by preparing the relevant control account and taking the balancing figure.
Explanation:Most purchases are made on credit, and under single entry, these credit purchases are not completely recorded in a purchases account.
The creditors control account summarises all dealings with suppliers.
Opening creditors and credit purchases appear on the credit side of this account.
Payments made to suppliers, discounts received, returns outwards, and closing creditors appear on the debit side.
Since the account must balance, credit purchases are calculated as the balancing figure required to make both sides equal.
To find total purchases, we can then add cash purchases taken from the cash book to the credit purchases obtained from this control account.
Thus, the creditors control account is the key statement used to ascertain purchases in a single-entry system.
Answer:D. creditors control account