Use the following information to answer the next question. While performing a titration between CH3COOH(aq) and CSOH(aq), a student made the following observations (i) Methyl red is a good indicator for this titration. (ii) The pH before equivalence did not change with the addition of the base. (iii) pH at the equivalence point is greater than seven. Which of the above observations made by the student is/are true? (i) only (i) and (ii) (ii) only (iii) only (i), (ii) and (iii)