A laser travels towards an interface between materials with indices of refraction $n_1$ and $n_2,$ making an angle ${}_1$ with the normal to the interface. If which correctly describes the angle $of$ refraction with the normal $({}_2)$ after transmission into material $2?$

$A.{}_2<msub><mrow><mi></mi></mrow><mrow><mn>1</mn></mrow></msub>$

$B.{}_2>{}_1$

$C.{}_2={}_1$

$D.$ cannot $be$ determined from the information given