This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexually transmitted diseases, Subject name: Dental
An eight year old boy presents with multiple umbilicated papules on trunk. Diagnosis is 
Select and explain. 
A. Molluscum contagiosum, B. Chicken pox, C. Herpes zostr, D. Dermatophytosis
A: Molluscum contagiosum
Answer: A: Molluscum contagiosum 
Explanation: Molluscum contagiosum is a viral infection that causes a mild skin rash. The rash looks like one or more small growths or wa-like bumps (called mollusca) that are usually pink, white, or skin-colored. The bumps are usually smooth and shiny or pearly-looking, and may have an indented center Ref Harrison20th edition pg 1334