Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Channels are physical bridges between the sender and receiver of the message.
Reason (R): Dimensions of channel are: a. The mode of encoding and decoding messages; b. Message-Vehicles, and c. Vehicle carriers.
In light of the above statements, choose the most appropriate answer from the options given below.