问题详情

What do we learn about door-to-door mission？
A．The Superbus has a separate door for each of its 30-odd seats.
B．The individual doors allow for rapid loading and unloading of passengers.
C．The individual doors will make predetermined stops flexibly as passengers want.
D．The Superbus will pick up and drop off passengers based on their text-messaged requests.请帮忙给出正确答案和分析，谢谢！