An Advertiser for a Weight-Loss Product Decides to Use Paid

An advertiser for a weight-loss product decides to use paid search.This entails: 

A)  paying websites and portals to place ads in or near relevant search results based on keywords. 
B)  offering the same content material that a consumer would normally pay for using traditional media.  
C)  paying consumers a small amount to have them click on the particular websites. 
D)  promoting the product at the portal or other entry places to the Web.