The answer is "C. Commander in chief".
A commander-in-chief, likewise in some cases called supreme commander is the individual or body that practices supreme operational direction and command over a country's military powers. As a specialized term, it alludes to military abilities that dwell in a country state's official initiative—a head of state or a head of government .
Frequently, a given nation's president (whenever held by an official) require not be or have been an authorized officer or even a veteran. In these nations this pursues the guideline of regular citizen control of the military.