You Are Returning from a Nighttime Call Outside of Town

You are returning from a nighttime call outside of town on a very dark and poorly lit section of town. You should

A) keep your eyes moving between an outside focus and an inside focal point.
B) scan the centerline of the road when approaching oncoming vehicles.
C) use your high-beams at all times so that you can see hazards.
D) activate your Opticom or strobe lights to increase your visibility.