1. What is a type of variable cost that a Human Resource department of a corporation would typically have? Name at least two examples. (10 points) 2. What is a type of fixed cost that a Human Resource department of a corporation would typically have? Name at Least two examples. (10 points) 3. Describe an example of a Human Resources department using operating leverage (which means substituting fixed costs for variable costs to be be more cost effective. Under operating leverage, the fixed cost replace some or all variable costs.) (50 points) For example (AND PLEASE DON'T USE THIS EXAMPLE.), in this week's lecture, we talked about a Human Resources department offering leadership course in-house with the fixed costs of an instructor fee and room rental instead of using the variable costs of sending employees to external leadership courses and paying variable fees as needed. 4. Why is a long payback period of seven years for an investment in a recruiting candidate assessment center more risky for an employer than a shorter payback period of two years for the same investment? (30 points)