Write True or False and explain your choice. $(3$ points$)2\mathrm{.}1.$ In process costing, the equivalent units of production must be$1\mathrm{.}2.$determined for each cost category in each department.The payback method is a true measure of the profitability of an investment$\mathrm{.}1\mathrm{.}3.$ The first major step in implementing an Activity Based Costing system is to identify the manufacturing overhead that will form the foundation for the system.