Answer: A

Reasoning: MEN-1 is characterized by primary hyperparathyroidism due to multiglandular hyperplasia, pancreatic/duodenal neuroendocrine tumors, anterior pituitary adenomas and other fore-gut carcinoids; involvement of the posterior pituitary has not been described as part of the syndrome [Syro, 2012, PMID 22584705; Duh, 1987, PMID 2886072; Harach, 1992, PMID 1349556].