The method employed by the credit card company is the adjusted balance method, the correct option is A.
The adjusted balance method is a financial accounting method that bases finance charges on the amounts owed at the end of the current billing cycle after credits and payments post to the account.
Though the payment is not given but from the beginning balance and the purchases, Dennis owes a certain amount of money.
The finance charge is based on the amount owed by Dennis.
Thus, the method employed by the credit card company is the adjusted balance method.
Learn more about the adjusted balance method here: brainly.com/question/1808408