9.Your manager is trying to decide between three different types of machines, each with different costs and different levels of output. However, the output level of each machine is dependent on the quality of the raw materials input to the process. In turn, the quality of the raw materials can be described by a probabilistic function that is dependent on multiple variables in the operating environment. What analysis tool or tools do you recommend using to help your manager decide between the three machines?

a. Cross-over Chart

b. Decision Tree

c. All of the above

d. None of the above