Which of the following statements are true:

For refraction of white light through a glass prism at minimum deviation position of prism.

A. The angle of prism becomes zero.

B. Angle of refraction at first refracting surface r1 is equal to angle of refraction at second refracting surface r2.

C. The refracted ray inside the prism is parallel to the base of the prism.

D. Angle of emergence becomes 90°.

E. Angle of incidence is equal to angle of emergence.

Choose the correct answer from the options given below:

B, C and E only 

$\text{For minimum deviation } A = e , r_1 = r_2 , \text{and the refracted ray inside the prism is parallel to the base of the prism.}$