Triangle A'B'C' is a reflection of triangle ABC across the line 1. Select ALL statements that MUST be true.
A. Line I bisects segment AB.
B. Line I bisets segment CC'.
C. Angle ABC is 60 degrees.
D. Line BB' is perpendicular to line I.
E. Angle ABC is congruent to angle A'B'C'.
F. Triangle ABC and A'B'C' are congruent.
G. Segment BC is congruent to segment B'C'.
H. The distance from point A to linel is the same as the distance from point A' to line I.