Answer
D. Credit card A is the better deal over the course of the first 3 months, but credit card B is the better deal over the course of the first year.
Step-by-step explanation
An Introductory rate is low rate given by credit card companies to its clients as an incentive for card application. An introductory APR with a 0% offer simply means that a person is not required to pay interest on his or her purchase for a particular period of time. Introductory APR could last from 6 to 12 months. For the first 3 month, card A (7.6%) offers a better deal than card B(7.9%). Over the course of the year, card B(22.9%) offers a better deal than card A(23.4%)