In this problem, we consider the delay introduced by the tcp slow-start phase. consider a client and a web server directly connected by one link of rate r. suppose the client wants to retrieve an object whose size is exactly equal to 15 s, where s is the maximum segment size (mss). denote the round trip time between client and server as rtt (assumed to be constant. ignoring protocol headers, determine the time to retrieve the object (including tcp connection establishment) when:
a. 4s/r > s/r + rtt > 2s/r
b. s/r + rtt > 4s/r
c. s/r > rtt