A process consists of steps​ A, B, and C with capacities of 50 units per​ hour, 40 units per​ hour, and 60 units per hour respectively. Which of the following statements is​ best? A. There should be a small amount of inventory in front of step C. B. There should be a small amount of inventory in front of step B. C. If step A is improved so it can produce one unit per​ minute, the company has saved about 8 minutes per hour. D. If demand is 50 units per​ hour, the manager should try to balance capacity with demand so that steps​ A, B, and C each have a capacity of 50 units per hour.

Problem 3: access control pokeygram, a cutting-edge new email start-up, is setting up building access for its employees. there are two types of employees: managers and engineers, and there are three departments: security, networking, and human resoures. each employee works in a single department, and each department is housed on a different floor. managers are allowed access to any floor, while engineers are allowed access only to their own floor. there are three badge-operated elevators, each going up to only one distinct floor. every employee has one badge. pokeygram wants to use the best possible access control method in order to minimize delay for the elevators (a) access control matrix, 1. which of the following would you recommend that pokeygram use: (b) access control lists, or (c) capabilities? make sure to justify your answer. 2. what, if any, would be the benefits (and/or disadvantages) of using rbac (role-based access control) in this situation? keep your solution for this problem limited to 10-12 lines of text.