Which idea does the the following sentence from the passage best express?
"O God," he thought, "what a demanding job I've chosen!
Day in, day out, on the road. The stresses of selling are
much greater than the actual work going on at head office,
and, in addition to that, I still have to cope with the
problems of travelling, the worries about train connections,
irregular bad food, temporary and constantly changing
human relationships, which never come from the heart. To
hell with it all!"
A. It was easy to make friends with new people,
O B. People had jobs that were repetitive and boring
O C. Train travel was the best way to get from one city to the other.
O D. People enjoyed traveling by train.