FERMAT 2024 Problem 5

Square P Q R S is divided into 16 smaller congruent squares, as shown.

Image

What fraction of P Q R S is shaded?

Answer Choices
A. \frac{1}{3}
B. \frac{1}{6}
C. \frac{1}{2}
D. \frac{1}{4}
E. \frac{3}{8}