According to Most Sales Experts, Who Should Industrial Salespeople First

According to most sales experts, who should industrial salespeople first call upon in a company that is new to them?

A) the individual in the company who is the focus of dissatisfaction
B) the individual in the company's purchasing department who is the focus of receptivity
C) the individual in the company's purchasing department who is the focus of power
D) the company's president
E) none of the above is totally correct; sales experts don't agree who should be seen first