"I am sad because you are stupid."
Translation:Saya sedih karena kalian bodoh.
Is this quesition referring to one stupid person or multiple stupid people? I understood 'kalian' = 'you all' and 'Anda/kamu' = 'you'. Should either 1) the English be 'I am sad because you all/all of you are stupid' or 2) the Indonesian be 'Saya sedih karena Anda bodoh'?