which option is correct?

[eclipse20]

I don't really like the people to who I was talking.
I don't really like the people to whom I was talking.
I don't really like the people who I was talking to.
I don't really like the people whom I was talking to.

[easystreet]

...to whom I was talking - super poprawnosc
...who i was talking to- nie podoba sie na ogol English teachers, chociaz nie
jest niepoprawne (nie lubia widziec rozdzialu phrasal verbs, czyli przymiotnika
na koncu zdania)
...whom I was talking to- jak wyzej. Trzymaj... to whom I was talking, a nie
zbłądzisz w piasniu esejow, itp. W mowie potocznej, mozesz uzyc dwoch
powyzszych.