Adrian saw an amazing commercial for a new Oreo flavor during this year's NBA All$-$Star Game. While not generally a fan of cookie snacks, this commercial was so good that Adrian decided to give the new Oreo flavor a try. Based on this information, we would most accurately say this advertising probably caused

a$.$ the cookie snack industry to become a monopoly, when prior to advertising, it was probably perfectly competitive.

b$.$ Adrian's demand to become less elastic, and the cookie snack industry is likely a monopoly industry.

c$.$ Adrian's demand to become less elastic, and the cookie snack industry is likely a monopolistically competitive industry.

d$.$ Adrian's demand to become more elastic, and the cookie snack industry is likely a monopolistically competitive industry.

e$.$ the cookie snack industry demand to become less elastic, and Adrian's demand was unaffected.