This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin Cancer, Subject name: Skin
A 25-year-old girl presents with papules, erythema and telangiectasiae over the face as shown below. She also gives a history of flushing and burning sensation on exposure to sun and on any emotional disturbance. The most likely diagnosis is: 
Select and explain. 
A. Acne vulgaris, B. Rosacea, C. Systemic lupus erythematosus, D. Scabies
B: Rosacea
Answer: B: Rosacea 
Explanation: Ans. (b) Rosacea.