In Which of the Following Ways Does Presidential Rule Differ

In which of the following ways does presidential rule differ from emergency rule?

A) Presidential rule is more likely to be used during international conflicts than during domestic ones.
B) Presidential rule is used only with respect to states,not with respect to the country as a whole.
C) Presidential rule is more of an economic tool than a tool of governance.
D) Presidential rule is more controversial in its use than emergency rule.