The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Blood brain barrier is absent in all of the following areas except   (A) Subfornical region   (B) Habenuclear trigone   (C) Area posterma   (D) Neurohypophysis
['(B) Habenuclear trigone <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Subfornical region \n (B) Habenuclear trigone \n (C) Area posterma \n (D) Neurohypophysis <> possible answers', '  Blood brain barrier is absent in all of the following areas except <> context@']