求助大牛的帮忙！！这道题怎么理解啊！！！谢谢啦

Vicky627

From the bark of the paper birch tree the Menomini crafted a canoe about twenty feet long and two feet wide, with small ribs and rails of cedar, which could carry four persons or eight hundred pounds of baggage so light that a person could easily portage it around impeding rapids.
（A）baggage so light
(B) baggage being so light
?(C) baggage, yet being so light?
(D) baggage, and so light?
(E) baggage yet was so light
答案是最后一个，但实在是不能理解啊。。谢谢大牛啊！！

Vicky627

啊啊，没有人么？。帮帮忙吧。。