UKMT Pink Kangaroo, 2026

Amber draws an equilateral triangle $PQR$. The point $S$ is the midpoint of $PQ$. A line is drawn parallel to the base, $PQ$, through the midpoint of $RS$. What fraction of the area of triangle $PQR$ is shaded?

(A) $\frac{1}{8}$ (B) $\frac{3}{10}$ (C) $\frac{1}{4}$ (D) $\frac{3}{8}$ (E) $\frac{1}{3}$