Which statement best describes network security
a. network security means all information is open to the public the network is not compromised and everyone has access to the network
b. network security means all personal information is kept safe the network is not compromised and only authorized users had access
c. network security means everyone has access to the network the network is not compromised and no one has authorization to use it
d. network security means everyone has access to the information the network is not compromised and only a handful of people are authorized to use it