[单选题]
The critical angle for a8 1kpcoz a4ttg1n +v/m substancecwn6w1ek *1z gpw hbdt q5u5w7b5 m2a- is measured 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.
