Answer the following question by indicating either True or False 1) The break-even quantity is the volume at which the total revenue equals total cost. 2) The variable cost is the portion of total cost that remains constant regardless of changes in levels of production. 3) Fixed cost is the portion of the total cost that remains constant regardless of changes in levels of output. 4) Sensitivity analysis is a technique for systematically changing parameters in a model to determine the effects of such changes. 5) A preference matrix is a table that allows the manager to rate an alternative according to one performance criterion. 6) Operations management refers to the direction and control of inputs that transform processes into products and services. 7. As a functional area of a business, Operations translates materials and services into outputs. 8. A critical path is any sequence of activities between a project's start and finish. 9. The earliest start time is never the same as the latest start time. 10. To obtain the latest start and latest finish time, we must work forward through the network