Which of the Following Applies to a Managed Float System

Multiple Choice

Which of the following applies to a managed float system?
I. Governments and central banks seek to influence exchange rates by buying or selling
Their own currencies.
II. The exchange rates are allowed to float, but their values are influenced by governments.
III. Governments intervene to prevent large and sudden swings in the exchange rate.

A) II and III only
B) I and II only
C) I and III only
D) I, II, and III