Your class is conducting an experiment to study geometric sequences. The class forms a line. The first person takes a whole pizza, divides it in half, keeps half, and hands the other half to the next person. The next people in line do the same thing with their pieces. Which portion of the whole pizza does the seventh person in line get?
A. start fraction 1 over 256 end fraction
B. start fraction 1 over 64 end fraction
C. start fraction 1 over 128 end fraction
D. start fraction 1 over 32 end fraction