Which of the following sets of coefficients correctly balances the equation?3 + → ()3 + * 1 point A. 1, 1, 2, 1 B. 1, 3, 1, 3 C. 2, 6, 2, 6 D. 2, 1, 1, 2

The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?