n_glass sin theta_glass                         1.3 x Sin 40^o
theta_air = Sin ^-1 ( ----------------------------- ) = Sin ^-1 ( -------------------- )  =  57^o  
                                           n_air                                                        1.0

    
Observe that we use 25^o instead of 65^o.  The angle is the angle to the normal not the angle to the surface.

The Correct Answer is  C.