A 10 yrs boy presented with cervical lymphadenopathy. Needle biopsy from the nodes revealed secondaries from papillary ca of thyroid.The child underwent complete removal of tumor near total thyroidectomy and radical neck dissection. The immediate next line of management is:

• A. Bone scan to evaluate secondaries
• B. CECT scan to assess any residual disease
• C. Start thyroxinesupression therapy
• D. Iodine 131 Whole body scan to assess extent of disease