How should one pass a structure or a post that obstructs a two-way road?

1. Correct answer: Pass it on the right, unless otherwise indicated by a signpost.
2. Pass it from the left only.
3. Pass it according to the road’s condition.
4. You may pass the obstruction from either side.

WhyOn a two-way road you pass an obstacle on its right, unless a sign says otherwise. The left is already the oncoming side.