On a two-way road with three lanes, a left turn is made from the middle lane, even if the right lane is free.
On a two-way road with three lanes, where the middle lane is used for traffic in both directions, you may move into the middle lane to turn left or make a U-turn, while entering the extreme left lane is prohibited, because it is intended only for oncoming traffic (clause 54). So the middle lane is the leftmost lane allowed for a left turn, and the turn must be made from it (clause 40).
Option 1. A left turn must be made from the leftmost permitted lane, which here is the middle lane, not the right one.
Option 3. On such roads, turning left from the right lane is prohibited.
Option 4. On roads of this type, a left turn is always made from the middle lane, whether or not the right lane is occupied.