Was möchtest du? Or Was möchten Sie?

What is the correct way to say "What would you like"? The course audio and written text teach's "Was möchtest du"? but the quiz at the end insists on saying "Was möchten Sie"? as the correct answer. Can you tell me which one is correct? :cry: Regards Willie

Both are correct, depending on the circumstances: Du is familiar -- use for close friends, children, etc. Sie is more formal -- business situations, adults (that aren't close friends or relatives), etc.

Many thanks, I was getting a bit confused. Regards Willie