In the article, The World Is Going Bust: What Is the Sovereign Debt Crisis and Can We Solve It?, the authors state that 70 countries are at risk of "Debt Distress". This is a problem because a country defaulting on its debt:

A. Risks severe devaluation of its currency, such as what happened in Sri Lanka.
B. Reverses economic gains and pushes residents back into poverty.
C. Will be unable to make needed infrastructure investments in domestic programs such as healthcare, energy, and transportation.
D. Hurts their students studying abroad who can no longer afford to pursue their education. Which are correct?