Revenue has increased but profits have steadily declined. Why? Because default rates has rapidly increased.
Conclusion: increasing the interest charged on outstanding balances from an APR of 9.5% to an APR of 12% will be sufficient to compensate for the current rate of defaults and bring the division back to profitable growth.
Meaning: The company believes that by increasing APR they can not only compensate for the defaults but also achieve profitable growth. Killing two birds with one stone
Pre-Think: We need to think in what cases will the company's plan to achieve profits fail even if APR is increased to 12%
What if, the customers continue to default? Actually, what if the default rates on credit card loans rapidly rises because the interest rate that customers need to pay is much higher (12%)?
So we can confirm E is the right answer:
(E) An increase in the APR charged on credit card balances often results in higher rates of default.
(A) Many other companies have experienced a similar trend in their default rates.
Irrelevant because we are concerned with the credit card division of this company.
(B) The company's operating expenses are above the industry average and can be substantially reduced, thus increasing margins.
Yes it can help increase profits but the stem specifically states: undermine a plan to increase interest rates in order to spur profitable growth?
(C) The rapid increase in default rates was due to a rise in unemployment, but unemployment rates are expected to drop in the coming months.
Out of Scope.
(D) The proposed increase in the APR will, alone, more than double the company's operating margins.
If this happens, then does this weaken? Nope. It strengthens.