This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Looser's zone is seen in – 
Select and explain. 
A. Osteogenesis imperfecta, B. Osteopetrosis, C. Osteomalacia, D. Hypoparathyroidism
C: Osteomalacia
Answer: C: Osteomalacia 
Explanation: Looser's zone is pathognomonic for osteomalacia. In osteogenesis imperfect (option 'a') it occurs rarely.