You are tasked with securing a small network for a client in which the following requirements must be met: if a user on the private network attempts to send confidential company information to an unauthorized entity, an alert should be triggered. the private trusted network should not be accessible from the public untrusted network. if attacks are coming from the external network, the system should detect and prevent malicious activity. all incoming and out going email should be scanned for malware. which of the following would best meet the requirements? (a) implement a firewall.(b) implement a ips(c) implement a utm appliance.(d) implement identity -based acls(e) implement ids