Answer:
A is the correct answer.
Explanation:
Sales managers are important for improving a company's revenue. Their job is to create a high-performance sales team and achieve revenue forecasts. Sales managers can improve the quality of their employees. A good manager who gets average salespeople knows how to coach, motivate and advise the salespersons, but for improving the managers would have to know what the salesperson would be doing and what are their traits and abilities job candidates will have to success.