Which of these should be kept in mind while receiving a call?

• A. Be rude, if the caller is rude.
• B. If the information is not readily available, take his phone number and call back.
• C. A message can be noted in hints
• D. You can be rude to a person if it‚Äö√Ñ√∂‚àö√ë‚àö¬•s a wrong connection.