Which pair of sentences correctly demonstrates the difference between asking for personal information in an informal situation and a formal situation, respectively?
A) Informal: 'What's your age?' / Formal: 'Could you tell me how old you are?'
B) Informal: 'Tell me about yourself.' / Formal: 'Please introduce yourself.'
C) Informal: 'Where do you live?' / Formal: 'May I inquire about your current residence?'
D) Informal: 'What do you do?' / Formal: 'What is your profession?'
E) Informal: 'Got any hobbies?' / Formal: 'Are there any leisure activities you engage in?'