[单选题]
A substance has an index of re7q8vxc wa9;nl fraction of 1.4ffq) x v1v-b ;.uyzsvq(/vh5h6. Light is passing through it at (hvvvf1. y5bqzh -/vxusq; ) f$53.0^{\circ}$. At what angle will it leave into the air?
A. It will not leave.
B. $59.1^{\circ}$
C. $43.2^{\circ}$
D. $33.2^{\circ}$
