The chart below describes the cost-effectiveness ratios (in dollars) for two different SAT testpreparation programs (referred to as test prep program "X" and test prep program "Y") based onthe characteristics of students at of your school.GroupXYUpper Class10085Upper-Middle Class10090Low Income White105140Low-Income Black120150Low-Income/English learner170180a. If only one program could be instituted and there is a heterogeneous population ofpeople who need job training, which program would you choose and why?b. Based on this information in the chart, what would you need to assume to be surethat the program you chose in (a) is the most cost-effective for the group as awhole? Why?