When navigating in an IALA Region A buoyage system, a VTS operator advises a vessel to pass to the north of a hazard. Which cardinal mark would the vessel be expected to see marking this hazard?

1. A yellow and black pillar buoy with two cones pointing downwards.
2. A black pillar buoy with a yellow band and two cones base to base.
3. A yellow pillar buoy with a black band and two cones point to point.
4. A black and yellow pillar buoy with two cones pointing upwards.