Which lane should you enter when making a U-turn in Subject 3?

[MacEmery]

Here is the relevant introduction to vehicle U-turns: 1. On a two-lane road, enter the fast lane when making a U-turn. 2. On a three-lane road, enter the middle lane when making a U-turn. 3. On a four-lane road, enter the second lane from the right when making a U-turn. Additional information: 1. Before making a U-turn, check whether you are in the leftmost lane. If not, you should change lanes in advance. First observe the vehicle situation in the left rearview mirror, confirm safety, turn on the left turn signal, and change to the left lane after 5 seconds. If you are still not in the leftmost lane after changing, turn on the left turn signal again, wait for 5 seconds, and change lanes once. 2. It is forbidden to change two lanes at once. The correct operation is to change lanes one by one until you reach the leftmost lane. 3. Do not cross the solid line at the intersection, let alone change lanes. At intersections without U-turn restrictions, turn on the left turn signal in advance, obey traffic rules, slow down and make a U-turn, then enter the second lane from the right to complete the U-turn operation.