[OG18-T800]逗号加and的特殊情况？

LcR-

[OG18-T800] As criminal activity on the Internet becomes more and more sophisticated, not only are thieves able to divert cash from company bank accounts, they can also pilfer valuable information such as business development strategies, ne w product specifications, and contract bidding plans, and sell the data to competitors.

    A.they can also pilfer valuable information such as business development strategies, new product specifications, and contract bidding plans, and sell
    B.they can also pilfer valuable information that includes business development strategies, new product specifications, and contract bidding plans, and selling
    C.also pilfering valuable information including business development strategies, new product specifications, and contract bidding plans, selling
    D.but also pilfer valuable information such as business development strategies, new product specifications, and contract bidding plans to sell
    E.but also pilfering valuable information such as business development strategies, new product specifications, and contract bidding plans and selling

正确答案是A；

我的问题是：曼哈顿写了说一个主语发出的两个动作连接：
正确的有2种：He walked to school and ate lunch later.
                       He walked to school, and he ate lunch later.
错误的表达是：He walked to school, and ate lunch later.


那么A当中的，and sell这里，是they发出的第二个动作，这样连接却是正确的，我是否可以理解为曼哈顿稍微提到过的特殊情况：and连接的句子较长的时候可以在and前面加逗号 ？

还是说有其他的我忽视的语法点 ，谢谢！

梦季

看一下！               

LcR-

顶一下，求助！