问题：

[单选]

Refer to the exhibit. VTP has been enabled on the trunk links between all switches within the TEST domain. An administrator has recently enabled VTP pruning. Port 1 on Switch 1 and port 2  on Switch 4 are assigned to VLAN 2. A broadcast is sent from the host connected to Switch 1.  Where will the broadcast propagate?（）

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.