Sales Have Been Slow Recently at B & B Materials,so

Sales have been slow recently at B & B Materials,so management has organized a training program to improve the performance of its sales force.Which of the following would most likely lead to improved sales for B & B Materials?

A) Tests to measure the analytic and organizational skills of the sales force
B) Information about the marketing strategies used by competitors
C) Tests to identify the personality traits of sales force members
D) A time-and-duty analysis for each salesperson
E) Instructions on completing expense reports