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
Mask-like appearance of face with narrowing of aperture and rigidity of the mucosa is characteristic of: 
Select and explain. 
A. Progressive systemic sclerosis, B. Tetanus, C. Multiple sclerosis, D. OsteomaLacia
A: Progressive systemic sclerosis
Answer: A: Progressive systemic sclerosis 
Explanation: None