A. Someone who's at least 20 years old and has held a full licence in that category of vehicle for the last three years

B. Someone who's at least 21 years old and has held a full licence in that category of vehicle for the last three years

C. Someone who's at least 21 years old and has held a full licence in that category of vehicle for the last year

D. Someone who's at least 25 years old and has held a full licence in that category of vehicle for the last year