(a) Compute the income increase or decrease from repliscing the oid machithe with Whachurtan A A. (b) Compune the income increase or decrease from replacing the old machinte with Waldchirine B. (c) Should lopez keep or replace its oid machine? (d) if the machine should be replaced, which new machine should Logez purchase? Compute the income increase or decrease from replacing the old machine with Machine A. (Amounts tc . (c) Should Lopez keep or replace its old machine? (d) If the machine should be replaced, which new machine should Lopez purchase