[单选题]
The critical angle for a substan *;mbea7)bn cmce is measumon4 o 5:g grfp9k*9zkred at $57.3^{\circ}$. Light enters from air at $45.0^{\circ}$. At what angle will it continue?
A. $34.7^{\circ}$
B. $45.0^{\circ}$
C. $53.7^{\circ}$
D. It will not continue, but be totally reflected.
