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: Orthopaedics
Phocomelia is best described as - 
Select and explain. 
A. Defect in development of long bones, B. Defect in development of flat bones, C. Defect of intramembranous ossification, D. Defect of cartilage replacement by bone
A: Defect in development of long bones
Answer: A: Defect in development of long bones 
Explanation: Phocomelia :- Entire central portion of limb is absent. For example, complete forearm (radius and ulna) is absent and the hand is attached to arm.