OG12 Diagnostic Test SC 44 求高人指点！

44. 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 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                           but作为连词，前后不平衡
(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               but the erie canal后面没有谓语了
(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             which与修饰中间太远
(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                                   没有谓语
这道题很糊涂啊，OG的答案不能说服我啊，恳请诸位高人帮着看看，此题如何入手？？