Luis, the sales manager for a software development firm, is working on the problem of increasing sales by using the rational model of decision making. In the first step he identified the problem of his employees needing more training. In the second step he thought of alternative solutions; and in the third step he evaluated alternatives and selected a solution. Luis needs to in the fourth and final step.

A$)$ implement and evaluate the training program chosen

B$)$ select a contingency plan

C$)$ do more research to look at types of training

D$)$ determine how costly the solution will be

E$)$ set up a diversity and synergy training plan to increase the chances of success