对于逗号后分词修饰很令人confused的题，求助

luyiqing

In the Louisiana Purchase of 1803, the United States acquired 828,000 square miles for about four cents
an acre, which more than doubled the country's size and that brought its western border within reach of
the Pacific Ocean.
(A) In the Louisiana Purchase of 1803, the United States acquired 828,000 square miles for about four cents
an acre, which more than doubled the country's size and that brought
(B) For about four cents an acre the United States acquired, in the Louisiana Purchase of 1803, 828,000 square
miles, more than doubling the country's size and it brought
(C) With the Louisiana Purchase in 1803, the United States acquired 828,000 square miles for about four cents
an acre, more than doubling its size and bringing
(D) The United States, in the Louisiana Purchase of 1803, for about four cents an acre, acquired 828,000
square miles, more than doubling the country's size, bringing
(E) Acquiring 828,000 square miles in the Louisiana Purchase of 1803, the United States bought it for about
four cents an acre, more than doubling the country's size and bringing这题选C，逗号后面分词修饰828000 square miles.
27. GWD21-Q27:

The electronics company has unveiled what it claims to be the world’s smallest network digital camcorder, the length of which is that of a handheld computer, and it weighs less than 11 ounces.

1. to be the world’s smallest network digital camcorder, the length of which is that of a handheld computer, and it weighs
   
   
2. to be the smallest network digital camcorder in the world, which is as long as a handheld computer, weighing
   
   
3. is the smallest network digital camcorder in the world, which is as long as a handheld computer, and it weighs
   
   
4. is the world’s smallest network digital camcorder, which is as long as a handheld computer and weighs
   
   
5. is the world’s smallest network digital camcorder, the length of which is that of a handheld computer, weighing
   
   

这题选D，我觉得他宾语从句unveiled后面少了个that耶，B为什么不可以，既然前面那道题可以跳跃修饰的话，weighing也可以跳跃修饰digital camcorder？

luyiqing

大牛们帮帮忙吧，我快考了