An isosceles trapezium of reflecting material of refractive index \[\sqrt{2}\] and dimension of sides being 5 cm, 5 cm, 10 cm and 5 cm. The angle of minimum deviation by this when light is incident from air and emerges in air is:

• A. \[22\frac{1}{2}{}^\circ \]
• B. \[\text{45}{}^\circ \]
• C. \[\text{3}0{}^\circ \]
• D. \[\text{6}0{}^\circ \]