What is the NPV for both A and B$?$ He is told to assume that: $1.$ The life of each machine is $3$ years. $2.$ The company thinks it knows how to make $8\%$ on investments no more risky than this one, $3.$ Labor and maintenance are paid at the end of the year. The NPV for Machine A$=5($round your responso to the nearest wholo number and include a mirus sign if necessary$).$