For the cash flows shown, determine the incremental cash flow between machines B and A for (a) year 0, (b) in year 3, and (c) in year 6. Machine First Cost, $ A B 15,000 25,000 AOC, $/year -1,600 400 Salvage value, $ 3,000 6,000 Life, years 3 4 (a) = -10000 (b) = 13200 (c) = 4200 (a) 10000 (b) = 13200 (c) =6000 (a)=-10000 (b)=-1800 (c) 1200 (a)--10000 (b) 13200 (c) 13200