Addition of phenolphthalein to an unknown colorless solution does not cause a color change. The addition of bromthymol blue to the same solution leads to a yellow color.

A)s the solution acidic, neutral, or basic?
B) Which of the following can you establish about the solution: a) a max pH b)a specific range of pH value c) a min pH
C) What other indicator or indicators would you want to use to determine the pH of the solution more precisely? (more than one may apply) alizarin yellow R, methyl violet, methyl red , or all the above.