What should drivers who wish to pass oversized vehicle loads or convoys do?

• They should wait for the driver of the vehicle ahead to give them a sign.
• They should make sure that they have enough room to manoeuver around the oversized vehicle load or convoy.
• They should have an adequate sightline to ensure there is no oncoming traffic.
• Both B and C.
  Explanation:

  "Drivers who wish to pass oversized vehicle loads or convoys should ensure it is safe to do so by making sure they have enough room to manoeuver around the oversized vehicle load or convoy and that they have an adequate sightline to ensure there is no oncoming traffic."