Which of the Following Is an Example of Effective Use

Which of the following is an example of effective use of an enumerated list?

A) Three supervisors will travel to Orlando.They are:
1) Bob,
2) Larry, and
3) John.
B) Our company should provide access to the security system to all managers because:
1) Most managers have keys and will be entering the building during times when no one from the security office is available to disarm the system.2.Managers should be able to allow other employees into the building.3.Managers would see the trust our company has in them and that would help boost employee morale.
C) When you are ready to log into the network, you should: 1.Double-click the network icon located in your desktop.2.Type in your user ID and password in the boxes indicated.3.Click OK.4.Select the network drive you wish to access (e.g.X: Personnel) .5.Click OK.
D) None of the above is an effective example.