A part is processed on 5 stations to obtain the final product. Scrap rate estimates are 0.04, 0.05, 0.03, 0.2, and 0.06 at stations 1 through 5. If 100,000 good units are to be produced at the last station, how many units of raw material should enter the system at the beginning, the first station?

a) 112210

b) 142660

c) 132510

d) 122710

e) 152770