SEO and Web Service

A)  The advertiser pays for an impression on an ad with CPC bidding, and pays when a user watches a video ad with CPV bidding.

B)  The advertiser pays for a click on an ad with CPC bidding, and pays when a user watches a video ad with CPV bidding.

C)  The advertiser pays for a click on an ad with with CPC bidding, and pays for a video ad impression with CPV bidding.

D)  The advertiser pays for a click on an ad with CPC bidding, and pays for a conversion with CPV bidding.