争论中的GWD-8-Q20

以下是前辈的解释，但是小弟还是觉得困惑，请大家各抒己见。谢谢阿：）

GWD-8-Q20:  MingLiU","serif"; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-fareast-language: ZH-TW;">倒裝

Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also caused erosion and very quickly deforested whole regions.

(A.B.DMingLiU","serif"; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-font-kerning: 0pt; mso-fareast-language: ZH-TW;">爭議題)

1. Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also[C1] 

2. Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast), which gave consumers relatively inexpensive houses and furniture, but also[C2] 

3. The systematic clearing of forests in the United States, creating farmland (especially in the Northeast) and giving consumers relatively inexpensive houses and furniture, but also[C3] 

4. The systematic clearing of forests in the United States created farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also[C4] 

5. The systematic clearing of forests in the United States not only created farmland (especially in the Northeast), giving consumers relatively inexpensive houses and furniture, but it[C5] 

   Answer:

正确选项应该为B 

not only在句首所以前半句用倒装， 动词用过去式did所以A中表并列的gave错， but also 后的句子和前半句要对应用被动  but also为固定搭配，不能拆开