请教OG11-D40语法题

D44        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.

1.                   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

2.                   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

3.                   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
            

4.                   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

5.                   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

答案是B，请问B 中为什么or 是正确的？

我记得，肯定句（指没有not 的句子）用and，只有not的句子是否定句才将and 改为or吗？

  宽度和深度为什么用or ?40 feet wide or 12 feet deep? 而不是用and ？

谢谢

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