This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Skin
Difference in acne rosacea & acne vulgaris: 
Select and explain. 
A. Erythema, B. Absence of comedone, C. Papule, D. Pustule
B: Absence of comedone
Answer: B: Absence of comedone 
Explanation: Ans. b. Absence of comedoneComedones are characteristic lesions of acne, absent in rosacea