Answer:
In the course of typing the e-mail message,Helene is engaged in message encoding(B).
However, while hitting the send icon,Helene is engaged in message transmission(A).
Step-by-step explanation:
Message encoding is actual formulation of the message and the sender must bear in mind that the essence of communication is comprehensibility,as a result choose tone and words that are appropriate in a given circumstance.
On other hand,message transmission involves the sending of the message crafted earlier in the course of message encoding to the recipient .