This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrine, Subject name: Pathology
Biopsy from parathyroid gland from a 55-year old male who presented to nephrology department of AIIMS has been shown below. He is a known case of chronic kidney disease with hypertension and type II diabetes. He has recently developed bone pain, lesions in skin and recurrent stones in kidney 
Select and explain. 
A. Water clear cells in parathyroid hyperplasia, B. Water clear cells in parathyroid Ca, C. TB parathyroid, D. Parathyroid Necrosis
A: Water clear cells in parathyroid hyperplasia
Answer: A: Water clear cells in parathyroid hyperplasia 
Explanation: Ans. (a) Water clear cells in parathyroid hyperplasia.*The given histology shows abundant optically clear cells of variable size (hyperplasia and hypertrophy), with spherical clear vacuoles surrounded by thin eosinophilic material; basal nuclei, compact or alveolar patterns.