For the High-Productivity Group K the cost of attaining an educational level y is CH(y)=$5000yAnd for the Low-Productivity Group M the cost of attaining that level is CL(y)=$10,000yEmployees will be offered $30,000 if they have y<y?where y? is an education threshold determined by the employer. They will be offered $90,000 if they have y?y?.A) What is the highest level of y* that can be set and still have the high-productivity people choose to meet it?B) What is the lowest level of y* that can be set and still have only the high-productivity people meet it?C) Which of the two groups will choose to attain it is the threshold educational level y* is set at 15? At 8? And at 5?D) Suppose an employer only wants to hire high productivity workers. What is the range of between which it shoul set y* to ensure such?