我是新来接替Mr abc工作的销售助理.Translate it into English

问题描述:

我是新来接替Mr abc工作的销售助理.Translate it into English
Which is correct?Please provide a better answer and explain in mandarin.
1)I am the new sales assistant taking the place of "Mr abc"'s job.
2) I am replacing "Mr abc" as the new sales assistant.
3) I'm the new "Sales assiatant" to take over "Mr abc".

I am the new sales assistant to replace Mr.abc