求助GWD TN24的一道题

akatsuki09

GWD7-Q39:




Seldom more that 40 feet wide and 12 feet deep, but it ran 363 miles across the rugged wilderness of upstate New York, the Erie Canal connected
the Hudson River at Albany to the Great Lakes at Buffalo, providing the port of New York City with a direct water link to the heartland of the North American continent.




A.      Seldom more than 40 feet wide and 12 feet deep, but it ran 363 miles across the rugged wilderness of upstate New York, the Erie Canal
connected


B.       Seldom more than 40 feet wide or 12 feet deep but running 363 miles across the rugged wilderness of upstate New York, the Erie Canal
connected


C.      It was seldom more than 40 feet wide and 12 feet deep, and ran 363 miles across the rugged wilderness of upstate New York, but the Erie Canal, connecting

D.      The Erie Canal was seldom more than 40 feet wide or 12 feet deep and it ran 363 miles across the rugged wilderness of upstate New York
, which connected


E.       The Erie Canal, seldom more than 40 feet wide and 12 feet deep, but running 363 miles across the rugged wilderness of upstate New York
, connecting


请教大家一下，关于这道题中A选项运用了it ran 和B中的runing在表达上的区别在哪呢？

doubleyou

我觉得A选项用了 it ran 以后就不是一个修饰成分了，变成了单独的结构
而答案应该是一个修饰的成分

akatsuki09

参考答案就是A，你怎么解释？