Closed Runways are marked ____________ and closed taxiways are marked by ___________.
A) Closed runways are marked with large yellow crosses, and closed taxiways are marked with yellow crosses.
B) Closed runways are marked with red lights, and closed taxiways are marked with green lights.
C) Closed runways are marked with white flags, and closed taxiways are marked with orange flags.
D) Closed runways are marked with black and white stripes, and closed taxiways are marked with blue and white stripes.