Final answer:
A credit purchase of goods is a transaction of financial character and will be recorded in the books. Therefore, the correct option is A.
Step-by-step explanation:
Out of the given options, the transaction that is of financial character and will be recorded in the books is option (a), which is a credit purchase of goods. This transaction involves the purchase of goods on credit, which means that the business owes money to the creditor for the goods received. It is a financial transaction as it affects the financial position of the business and will be recorded in the books of accounts.