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: Medicine
A 20 year old unmarried girl complaining of visual aura lasting for 20 minutes described as a small central disturbance in the field of vision marches towards the periphery, leaving a transient scotoma in its wake. The expanding border of that has a scintillating, dancing, or zigzag edge. This phenomena also remain visible in the dark or with the eyes closed. After the visual symptoms recede, headache develops. She gives a long standing history of stereotypic attacks. What is the most likely diagnosis? 
Select and explain. 
A. Glaucoma, B. Classic migraine, C. Transient ischemic attacks, D. Non organic visual loss
B: Classic migraine
Answer: B: Classic migraine 
Explanation: This is the classical description of classic migraine. No other diagnosis would fit in this scenario. Ref: Harrisons Principles of Internal Medicine, 18th Edition, Page 234