The second option is correct.
All triangles should equal 180 so the answer is B. When you solve it you get 60, 60, 60 which equals 180
I can help you but what are the options?
Theorem: If two chords intersect within a circle, then the product of the lengths of the segments (parts) of one chord is equal to the product of the lengths of the segments of the other chord.
In your case this theorem sounds as
Solve this equation:
Answer: correct choice is C.