In the sentence "Truckers don't generally care whobusestables as long as the food is good and the pies are homemade."(para.2 line 2 of unit 1 in book 3), the word "buses" means ________.
A. large vehicles that carry passengers, especially one that travels along a fixed route and stops regularly to let people get on and off
B. to take the dirty plates, etc. off the tables in a restaurant, as a job
C. to transport sb. by bus