Here is the Kansas rules for NON COMMERICAL licenses.
(4) class A motor vehicles include any combination of vehicles with a gross combination
weight rating of 26,001 pounds or more, provided the gross combination
weight rating of the vehicle or vehicles being towed is in excess of 10,000
pounds, and all other lawful combinations of vehicles with a gross combination
weight rating of 26,001 pounds, or more; except that, class A does not include
a combination of vehicles that has a truck registered as a farm truck under
subsection (2) of K.S.A. 8-143, and amendments thereto;
(5) class B motor vehicles include any single vehicle with a gross vehicle weight
rating of 26,001 pounds or more, or any such vehicle towing a vehicle not in
excess of 10,000 pounds gross vehicle weight rating. Class B motor vehicles
do not include a single vehicle registered as a farm truck under subsection (2)
of K.S.A. 8-143, and amendments thereto, when such farm truck has a gross
vehicle weight rating of 26,001 pounds, or more; or any fire truck operated by a
volunteer fire department;
(6) class C motor vehicles include any single vehicle with a gross vehicle weight rating
less than 26,001 pounds, or any such vehicle towing a vehicle not in excess
of 10,000 pounds gross vehicle weight rating, or any vehicle with a less than
26,001 gross vehicle weight rating towing a vehicle in excess of 10,000 pounds
gross vehicle weight rating, provided the gross combination weight rating of
the combination is less than 26,001 pounds, or any single vehicle registered as
a farm truck under subsection (2) of K.S.A. 8-143, and amendments thereto,
when such farm truck has a gross vehicle weight rating of 26,001 pounds, or
more, or any fire truck operated by a volunteer fire department; and