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: Medicine
A young adult presents with proximal weakness of upper limbs, features of facial palsy and winging of scapula. The most likely diagnosis is: 
Select and explain. 
A. Facio-Scapulo-Humeral Dystrophy, B. Limb-Girdle Dystrophy, C. Scapuloperoneal Dystrophy, D. Duchene Muscular Dystrophy
A: Facio-Scapulo-Humeral Dystrophy
Answer: A: Facio-Scapulo-Humeral Dystrophy 
Explanation: Answer is A (Facio-Scapulo-Humeral Dystrophy): Weakness preferentially affecting the facial and shoulder girdle (proximal weakness of upper limb) together with winging of scapula in a young adult suggests a diagnosis of facio-scapulo-humeral dystrophy. Autosomal Dominant (Positive Family History(2) Abnormal gene 4q (4q35 deletion) Childhood to young adulthood (may be delayed to 5th decade) Mild 1st CPK (Normal Dystrophy)