Which one of the following scenarios would necessitate the use of a NDA $($Non$-$Disclosure Agreement$)?$

a$.$

Your company wishes to educate users on the proper use of the network.

b$.$

Your company needs to prevent a new contractor from sharing information with a potential competitor.

c$.$

Your company needs to impose password restrictions on new users in the network.

d$.$

Your company would like to allow employees to bring their own devices.