Consider the following port security configuration:
Switch(config)# int gig 1/0/1
Switch(config-if)#switchport mode access
Switch(config-if)#switchport port-security
Switch(config-if)#switchport port-security maximum 3
Switch(config-if)#switchport port-security mac- address sticky
Switch(config-if)#switchport port-security violation restrict
What does the restrict option in the bottom command do?

a) Disables the port security feature
b) Shuts down the port if a violation occurs
c) Resets the port to default settings
d) Activates a security alert system