were working // had worked // been working

6 years ago

Hey,

If someone ask me why I decided to work in the area I work in today, which one is correct:

1) "I decided to work in this area, because many friends of mine were already working in this field." 

2) "I decided to work in this area, because many friends of mine had already worked in this field." 

3) "I decided to work in this area, because many friends of mine have already been working in this field"

Facts: I still work in this field and my friends also. So I guess the right one should be the present Perfect one.

I confused myself 👌