Catechol and $\mathrm{m}$-cresol respectively are

• A

  Benzene - 1,4 - diol; 3 - Methoxy phenol
• B

  Benzene - 1,2 - diol; 3 - Methoxy phenol
• C

  Benzene - 1,3-diol; 3 - Methyl phenol
• Correct answer
  D

  Benzene - 1,2 - diol; 3 - Methyl phenol

Hence, the correct answer is option: 'D'.