Lopez Company is considering replacing one of its old manufacturing machines. The old machine has a book value of $$47,000$ and a remaining useful life of four years. It can be sold now for $$57,000.$ Variable manufacturing costs are $$42,000$ per year for this old machine. Information on two alternative replacement machines follows. The expected useful life of each replacement machine is four years.

$\backslash$table$[[$Purchase price,Machine A$,$Machine B$],[$Variable manufacturing costs per year,$$122,000,$$$136,000$