This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Microdeletion is seen in? 
Select and explain. 
A. Beta thalassemia, B. Di George syndrome, C. Marfan's syndrome, D. All
B: Di George syndrome
Answer: B: Di George syndrome 
Explanation: Robbins basic pathology 9th edition page no 237,Heading =Deletion syndrome DiGeorge syndrome is caused by a small interstitial deletion of band 11 on the long arm of chromosome 22