GMAT Critical Reasoning (CR) | The recent interest among credit card issuers in establishin

The recent interest among credit card issuers in establishing credit card use in the province of Lijau is perplexing. Residents of Lijau save almost 40% of their discretionary income, a rate more than three times the national average, and most residents of Lijau are more likely to forgo a major purchase or borrow from relatives than to rely on an outside source of funds.

Which of the following, if true, would most support a prediction of success of the credit