For the Kentucky CDL Combination Vehicles test, which statement is correct about Class A weight thresholds?

1. Back under the trailer at an angle to save space.
2. Leave landing gear partly raised so it can clear the trailer nose.
3. Close every shut-off valve before moving the combination.
4. Class A covers qualifying combinations of 26,001 pounds or more when the towed unit is over 10,000 pounds GVWR.