The correct answer is option A. The color green suggests neutrality. This is proved by a universal indicator. This is a pH indicator that is composed of many substances that would exhibit color change as pH is changing. At a pH range of <3, the color would be red. At a pH range of 3-6, the color is orange to yellow. At a pH of 7, the color is green. At pH of 8-11, color is blue. Finally, at pH >11, the color is violet.
