One of the Reasons That Collapses of Currencies Occur Is

One of the reasons that collapses of currencies occur is

A) in situations of limited capital mobility, countries with undervalued exchange rates and large inflation- financed budget deficits suffer speculative attacks.
B) in situations of limited capital mobility, governments with overvalued exchange rates and large budget surpluses suffer speculative attacks.
C) in cases like western Europe in 1992 currencies had suffered speculative attacks when speculators judged that the policies needed to maintain floating exchange rates had become inconsistent with the government's political survival.
D) in situations of limited capital mobility, countries with overvalued exchange rates and large inflation-. financed budget deficits suffer speculative attacks.