You are working at the service desk as a network security technician and just received the following email from an end-user who believes a spear phishing campaign is being attempted against them:

(http://www.freesmartphone.io:8080/claim.php)

What should you do to prevent any other employees from accessing the link in the email above while still allowing them access to any other web pages at the domain freesmartphone.io?
a. Add DENY TCP http://www.freesmartphone.io ANY EQ 8080 to the firewall ACL
b. Add http://www.freesmartphone.io:8080/claim.php to the load balancer
c. Add http://www.freesmartphone.io:8080/claim.php to the browser's group policy blocklist
d. Add DENY IP ANY ANY EQ 8080 to the IPS filter