单项选择题

Sales dropping
Employees leaving
Customers screaming
You need the Five Secrets of Small Business!
To get the advantage over your competitors, you have to know something they don’t. That’s why you’re invited to the Five Secrets of Small Business! This very special conference is the work of Harvard MBA Chris Reynolds, author of best-sellers like Business Riches. Come learn five simple ways to become rich and successful. Call 905-454-9853 for more information.
What credentials are given for Chris Reynolds

A.His success with small businesses
B.His knowledge of company secrets
C.His position at a major university
D.His education and a book he published