4. A computer factory has the process diagram below. The operations in monitor department and main machine department occur separately and simultaneously. The three assembly lines are identical, and the two packaging lines are identical too. The product only needs to go through one of these identical operations.a. which operation is the bottleneck?b. what is the system's process time? Process cycle time?c. if the firm operate 8 hours a day, 20 days per month, what is the monthly capacity of the process.d. suppose a second identical station of Main Machine is added, (1) what is the new bottleneck? (2) what is the new process time of the system? What is the new process cycle time? 5. A product is currently made in a process-focused shop, where fixed costs are \(\$ 9,000\) per year and variable cost is \(\$ 50\) per unit. The firm sells the product for \(\$ 200\) per unit.1) What is the break-even point for this operation?2) What is the profit (or loss) on a market demand of 50 units per year?6. A firm is considering adding a second secretary to answer phone calls and make appointments. The cost of the secretary will be \(\$ 10/\) hour and she will work 200 hours each month. If each new client adds \(\$ 400\) of profit to the firm, how many clients must the secretary arrange for the firm to break even? Suppose that the secretary has an equal chance of providing either 0,2, or 6 new clients each month. Should the firm hire the secretary?