What Factors Are Included in the Third Layer of the Strategic

What factors are included in the third layer of the strategic communication model?

A) the targeted audience,the purpose,the medium,and the physical environment
B) the message content,the channel,the time the communication occurs,and the physical environment
C) the target audience,the purpose,the time the communication occurs,and the physical environment
D) the medium,the physical environment,the content,and the time the message occurs