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: Pathology
Which of the following is/ are seen in Hyperparathyroidism? 
Select and explain. 
A. Osteitis fibrosa cystica, B. Osteoporosis, C. Dissecting osteitis, D. All the above
D: All the above
Answer: D: All the above 
Explanation: Answer- D. All the aboveHealing responseOsteitis fibrosa cysticaOther manifestationsAbsence of lamina dura (demineralization of mandible)Pinhead stippling of skullMarrow fibrosisResorptionDiffuse bone resorptionSubperiostal bone resorption of phalangeal tuftsBrown tumor of hyperparathyroidismOsteoporosisDeformityPathological fractures