At Very Large Firms, Advertising Campaigns Are Likely to Be

At very large firms, advertising campaigns are likely to be performed by a(n) _____________________, while in small firms advertising campaigns are more likely to fall under the responsibility of ____________________.

A) experienced individual; an advertising agency
B) advertising agency; advertising department
C) advertising agency; one or two individuals
D) advertising department; one or two individuals
E) experienced individual; an advertising department