GAUSS8 2012 Problem 6

Ronald buys a pizza cut into 12 equal parts. He then cuts each part into 2 equal pieces. If he eats 3 of these pieces, what fraction of the pizza does he eat?

Answer Choices
A. \frac{1}{24}
B. \frac12
C. \frac38
D. \frac16
E. \frac18