Radiology A 8 year old boy is being treated for rickets. Which of the following investigations shows the earliest evidence for healing? A Serum Ca B Serum phosphates C Radiological examination of long bones D Serum ALP 💡 Explanation A 8 year old boy is being treated for rickets. Which of the following investigations shows the earliest evidence for healing? ✓ Correct Answer: C. Radiological examination of long bones