$($Scenario $12-4)$ The interviewer says; $"$It is important to measure the media weight of a media campaign. But we have to be aware that individual consumers might see an ad for the same product on television and in social media." You might respond by saying:

a$.$ "Yes, between$-$vehicle duplication does need to be accounted for."

b$.$ Yes, message impressions don't indicate if people actually saw the ads."

c$.$ "Yes, potential ad impressions are the key."

d$.$ "Yes, within vehicle duplication can skew the numbers"