If n ∥ m, which of the following statements are true? Select all that apply. Line m and n are parallel lines. Point B is lies on line m. Point A and C are lies on line n. There are two lines started from point B and one line passes through point A and one line passes through point B. So there is a triangle ABC. The angle ACB is denoted by 1. The angle ABC is denoted by 3. There is an angle with line m and line AB is denoted by 2 and an angle with line m and line BC is denoted by 4. Angle 1 is alternate interior angle of angle 4. The opposite angle of angle 1 is 60 degree. Also the corresponding angle of angle 2 is 20 degree. A. m∠2 = 60° B. m∠3 = 100° C. m∠2 + m∠4 = 80° D. m∠2 + m∠3 = 80°