Geometry

Question Analysis:
This problem tests understanding of how entire geometric figures, specifically triangles, are reflected across the diagonal line y = x.
The main focus is applying the coordinate swap rule to multiple points in sequence.

Key Concept Explanation:
For a reflection across y = x: (x, y) → (y, x)
Each vertex must be transformed using this rule.

Step-by-Step Solution:
A(1, 3) → A' = (3, 1) ✔️ (Option A)
B(4, 2) → B' = (2, 4) ✔️ (Option B)
C(2, 5) → C' = (5, 2) ✔️ (Option C)
Option D: (1, -3) ❌ Incorrect — not a swap, and wrong sign.
Option E: (2, 5) ❌ This is the original point C, not its reflection.

Common...