Which of the following diseases of the bone characteristically exhibits (in contrast to the other three conditions) a single lesion in a single bone ?
Which of the following diseases of the bone characteristically exhibits (in contrast to the other three conditions) a single lesion in a single bone ?
		A.	Central giant cell granuloma
B.	Osteopetrosis
C.	Paget’s disease of the bone
D.	Polyostotic fibrous dysplasia
