题目内容：
It can be inferred from paragraph 3 that
A. shippers will be charged less without a rival railroad.
B. there will soon be only one railroad company nationwide.
C. overcharged shippers are unlikely to appeal for rate relief.
D. a government board ensures fair play in railway business.
参考答案：【答案仅供学习，请勿对照自行用药等】