Aprinted circuit board is produced by passing through a sequence of three steps. The scrap rates for steps one through three are 5 percent, 3 percent, and 3 percent, respectively. If 10,000 good parts are needed, the number that should be started at step one is closest to which of the following?

a. 11,100

b. 11,140

c. 11,190

d. 11,240