You are considering two machines for use in your father farm. Which should not be selected on the basis of PW at an interest rate of 10% per year, if you have the following data machine X machine Y -18000 -12000 -7000 -6000 first cost maintenance cost salvage value life 3000 2000 6 6 machine Y should not be selected because its PW is -43002.8 machine Y should not be selected because its PW is -42002.8 machine Y should not be selected because its PW is -44002.8 machine Y should not be selected because its PW is -43302.8 .A .B .C .D