The performance of the manager of Division A is evaluated by residual income. Which of the following would improve the manager's performance? Select one: O Increase in average operating assets "Decrease in average operating assets. Increase in minimum required return Decrease in net operating income O In a make or buy decision, which of the costs below are relevant? Select one: Fixed costs that will not change regardless of the decision Only conversion costs. Fixed costs that can be avoided in the future if the decision is to buy Only direct material costs