Korean Questions — 언제예요?

What does "언제예요?" mean in English?

• A.is it?
• B.where?
• C.when?
• D.why?

What does "어느 것이에요?" mean in English?

• A.which?
• B.why?
• C.when?
• D.what?

What does "왜요?" mean in English?

• A.why?
• B.how?
• C.what?
• D.how much?

What does "누구예요?" mean in English?

• A.how much?
• B.which?
• C.who?
• D.is it?