What are the president's commander in chief powers?

Question $26$ options:

A$)$ to decide to go to war, and to call the National Guard into service during a time of crisis

B$)$ to decide how the military will be used once authorized by Congress, and to call the National Guard into service during a time of crisis

C$)$ to call the National Guard into service during a time of crisis, and to provide tax relief to soldiers during times of crisis

D$)$ to approve the level of funding for a war