"Who are you?"
Since both "Kamu siapa" and "Siapa kamu" are accepted, is there any nuance of difference between the two?
It was a multiple choice question and the correct option was "Siapa kalian". What is the difference between kalian and kamu and Anda?
What is the difference between kalian and kamu and Anda?
Kamu = you (singular)
Anda = you (singular, formal)
Kalian = you (plural)
One more bit of information: "kalian" is informal. If you wanted to use a formal "you, plural", you would stick with "Anda".