题目内容：
Where did the mine companies operate according to the news item?
A．In 28 states, from West Virginia in the east to Montana in the west. B．In 27 states, from West Virginia in the west to Montana in the east.
C．In 27 states, from West Virginia in the east to Montana in the west.
D．In 28 states, from West Virginia in the west to Montana in the east.
参考答案：
答案解析：