In the congestion avoidance algorithm, the size of the congestion window increases ____________ until congestion is detected.

A. Exponentially
B. Additively
C. Multiplicatively
D. Suddenly

Explanation: In the congestion avoidance algorithm, the size of the congestion window increases additively until congestion is detected. Once congestion is detected, the size of congestion window is decreased once and then the packets are transmitted to achieve congestion avoidance.