Interstate Distribution Inc. provides its employees with an email system. IDI notifies the employees that it may monitor their communications over the system. Some employees file a suit against IDI, claiming a violation of privacy. The court is most likely to hold that, with respect to communications over the email system,

Federal law prohibits the employees' privacy claim

Federal law prohibits an employers' 'intentional interception'

The employees did not have a reasonable expectation of privacy

The employer violated the employees' privacy rights