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
In sebaceous glands, accumulation of sebum leads to: 
Select and explain. 
A. Milia, B. Acne, C. Epidermoid cyst, D. Miliaria
B: Acne
Answer: B: Acne 
Explanation: Ans. b. Acne4 steps in pathogenesis of Acne are:Sebum productionHyperkeratosis of pilosebaceous unitPropionibacterium acnes colonization of pilosebaceous unit Inflammation