Which vehicle is outside Category B even though a learner might assume it is 'just a large car'?

1. A 3,200 kg van designed for the driver and 2 passengers
2. A 3,400 kg car designed for the driver and 5 passengers, towing a 700 kg trailer
3. A 3,600 kg goods vehicle designed for the driver and 2 passengers
4. A 2,800 kg estate car designed for the driver and 4 passengers