This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
Which muscle is relatively spared in facioscapulo humeral muscular dystrophy? 
Select and explain. 
A. Deltoid, B. Biceps, C. Triceps, D. Orbicularis
A: Deltoid
Answer: A: Deltoid 
Explanation: * The disease involves slowly progressive weakness of muscles of face,shoulder girdle,scapular and foot dorsiflexion. Ref Harrison20th edition pg 2234