If so equipped, when should an aircraft display the anti-collision light?
a. Only at night in flight, but not on the ground if being towed
b. Whilst taxiing but not whilst being towed
c. Only at night with engines running
d. At all times on the ground when the engines are running
a. Only at night in flight, but not on the ground if being towed
b. Whilst taxiing but not whilst being towed
c. Only at night with engines running
d. At all times on the ground when the engines are running