Sandras Socks is introducing a new wool dress sock that will sell for $12 per pair. Sandras must invest $62,000 in new equipment to make the socks. If Sandras per-pair target cost is $11.43 and the required rate of return on investment is 22%, how many pairs must Sandras sell? Round to the nearest whole number. Select answer from the options below

a.20,440

b.23,930

c.10,639

d.16,641