[求助]prep 2-90 动词的平行

这里的emit不是要和burn并列么 是否应该用动词原型呢？

Diesel engines burn as much as 30
percent less fuel than gasoline engines of comparable size, as well as
emitting far less carbon dioxide gas and far fewer of the other gases that have
been implicated in global warming.

(A) of comparable size, as well as
emitting far less carbon dioxide gas and far fewer of the other gases that have

(B) of comparable size, as well as
emit far less carbon dioxide gas and far fewer of the other gases having

(C) of comparable size, and also
they emit far fewer carbon dioxide and other gases that have

(D) that have a comparable size, and
also they emit far less carbon dioxide gas and other gases that have

(E) that have a comparable size, as
well as emitting far fewer carbon dioxide and other gases having

誰可以回答一下呢？

為什麼as well as後面不是接emit?

Thanks.