单项选择题

A.Every switch in the network receives the broadcast and will forward it out all ports.
B.Every switch in the network receives the broadcast,but only Switch 4 will forward it out port 2.
C.Switches 1,2,and 4 will receive the broadcast,but only Switch 4 will forward it out port 2.
D.Only Switch 4 will receive the broadcast and will forward it out port 2.