Sometimes I come across "Which" being used for people.
I didn't get to see the twins very well. That's why I can't tell which is which.
Which of you ate the chocolate?
Which one is the culprit?
Which "you" is who? (I also didn't understand this sentence btw. I don't understand the grammar structure, nor the meaning)
But is that correct? Or I must say "Who(m)"?