A. B, C, and D teenagers have three types of electronic products: mobile phone, computer, and camera.① Only one person has a mobile phone, computer, and camera; Have a camera; ③ Everyone owns at least one of three electronic products; ④ Whether A and B have a computer is the same (either two or neither); ⑤ Whether B and C have a mobile phone ⑥ Whether C and D have mobile phones is different. Who owns the camera? ['A.', 'B.', 'C.', 'D.']