Which important factor is taken into account when determining an estimate for the maximum network bandwidth to be used by a customer？（）

A.the size of the hard drives for each PC connected to the client’s network

B.the average size of the wallet based on the number of profiles and accounts

C.if any users will use IBM Tivoli Access Manager for Enterprise Single Sign-On during non-work hours

D.the number of users that will be connected using the wireless network， as opposed to a wired connection