A circle x2+y2−4x−6y−12=0x^2 + y^2 - 4x - 6y - 12 = 0x2+y2−4x−6y−12=0 is intersected by the line y=2y = 2y=2. What is the length of the chord?
252\sqrt{5}25
454\sqrt{5}45
262\sqrt{6}26
666