Which Is True of Negative Keywords on the Google Display

Multiple Choice

Which is true of negative keywords on the Google Display Network?

A) Negative keywords do not play any role in determining where ads are eligible to appear on the Google Display network.
B) Negative keywords on Display campaigns work as precisely as negatives on Google search campaigns.  
C) Adding negative keywords will prevent ads from showing on all placements containing those terms
D) The system compares negative keywords with the content of the placements, and if there is a match, ads is less likely to appear on those placements.