Ty Pennington, the Popular Host on Extreme Home Makeover, a Television

Ty Pennington, the popular host on Extreme Home Makeover, a television show designed to help a family in need by providing them with a completely new home in a week, has recently become a spokesperson for a drug for people who have been diagnosed as ADHD. In terms of the communication process, when Ty recommends this product, who is the message source?

A) Ty Pennington
B) the pharmacy company that produces the ADHD drug
C) the pharmacy industry
D) the newspapers that run the ad for the drug
E) the advertising agency that created the ad campaign