AMC8 1990 Problem 3

Past Contests AMC8 AMC 8 - 1990
1

What fraction of the square is shaded?
Image
Answer Choices
A. \dfrac{1}{3}
B. \dfrac{2}{5}
C. \dfrac{5}{12}
D. \dfrac{3}{7}
E. \dfrac{1}{2}