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: Surgery
Osteoporosis is characterized by all the following except ? 
Select and explain. 
A. Decreased bone mineral density, B. Decreased Serum Calcium, phosphorus and alkaline phosphatase is seen, C. Glucocoicoids can cause osteoposis, D. Dorsolumbar spine is the most coomon site of osteoporotic fracture
B: Decreased Serum Calcium, phosphorus and alkaline phosphatase is seen
Answer: B: Decreased Serum Calcium, phosphorus and alkaline phosphatase is seen 
Explanation: Ans. is 'b' i.e., Decreased Serum Calcium, phosphorus and alkaline phosphatase is seen Osteoporosis is a state of decreased mass per unit volume of a normally mineralized bone. Osteoporosis is the commonest metabolic bone disease. Osteoporosis is characterized by an abnormally low bone mass (low bone density) and defects in bone structure, a combination of which renders the bone unusually fragile and at greater than normal risk of fracture. Bone depletion may be brought about by predominant bone resorption, decreased bone formation or a combination of the two.