During a titration, \({\text{0.1 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\) sodium hydroxide is added to \({\text{0.1 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\) ethanoic acid. Which indicator would be the best to use as an end point indicator in this titration?

D