On an expressway with THREE lanes in the same direction, what are the standard statutory minimum speed limits for each lane from leftmost to rightmost under Article 78?

1. Leftmost lane: min 110 km/h; Middle lane: min 90 km/h; Rightmost lane: min 60 km/h (maximum speed 120 km/h)
2. Leftmost lane: min 120 km/h; Middle lane: min 100 km/h; Rightmost lane: min 80 km/h
3. All three lanes share an identical minimum speed limit of 50 km/h
4. Leftmost lane: min 80 km/h; Middle lane: min 70 km/h; Rightmost lane: min 40 km/h