This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
The level of which one of the following hormones is likely to increase after hypothalamic ablation ? 
Select and explain. 
A. Growth hormone, B. Prolactin, C. FSH, D. ACTH
B: Prolactin
Answer: B: Prolactin 
Explanation: Lesions of hypothalamic pituitary region that disrupts lactotrope response associated with hyperprolactinemia. radiation- induced damage cause elevated PRL levels , usually in the range of 30-100 microgram / litre ( Harrison 17 pg 2205)