A case of carcinoma larynx with the involvement of anterior commissure and right vocal cord, developed perichondritis of thyroid cartilage.Which of the following statement is true for the managements of this case ?

• A. He should first received radiotherapy and if residual tumour is present then should under go laryngectomy
• B. He should first undergo laryngectomy and then post-operative radiotherapy
• C. He should given radical radiotherapy as this can cure early tumours
• D. He should be treated with combination of chemotherapy and radiotherapy