Suppose Host A is sending Host B a large file over a TCP connection. The number ofConsider the following figure. Assuming TCP Reno is the protocol experiencing the behavior

shown. After the $22$nd transmission round, is segment loss detected by a triple duplicate ACK

or by a timeout?

triple duplicate ACK $.$a

none of them $.$b

both A and $B.$c

timeout $.d$

unacknowledged bytes that A sends cannot exceed the size of the receive buffer.

True $.$a

False $.$b