Which of the following are the characteristic features of communication?(a) Communication involves exchange of ideas, facts and opinions.(b) Communication involves both information and understanding.(c) Communication is a continuous process.(d) Communication is a circular process.Select the correct answer from the codes given below:

• A. (a), (b), (c) and (d)
• B. (a), (b) and (c)
• C. (a), (b) and (d)
• D. (b), (c) and (d)