Subject: mathqa
Question: in the manufacture of a certain product , 7 percent of the units produced are defective and 4 percent of the defective units are shipped for sale . what percent of the units produced are defective units that are shipped for sale ?
Option: 
A: 2.0 %
B: 1.25 %
C: 0.28 %
D: 0.125 %
Answer: C