A prism placed in air made up of flint glass is such that any incident ray on one surface does not emerge from the second surface. Critical angle for flint glass is \[36{}^\circ \] in air. Then, refracting angle A may be

• A. \[37{}^\circ ~\]
• B. \[54{}^\circ \]
• C. \[71{}^\circ \]
• D. \[73{}^\circ \]