A site is designing a virtual server, SNAT, and iRule such that all traffic using the virtual server from employee networks will have the source addresses translated to 10.10.1.30 but external…

A site is designing a virtual server, SNAT, and iRule such that all traffic using the virtual server from employee networks will have the source addresses translated to 10.10.1.30 but external customer traffic will not have it's source address translated. In either case, traffic should be load balanced to a member of the pool web_pool. Employees are from either 192.168.0.0/16 or 172.16.12.0/24 networks. Assuming a virtual server is associated with this rule and has no default pool, which iRule will fulfill these requirements?