<prompt> True about Mongolian spots is:Disappear by 1 year of ageReappear by 1 year of agePersist throughout lifeHave variable presentation in non-Mongolians  <response>: Ans. A. Disappear by 1 year of ageMongolian spot refers to a macular blue-gray pigmentation usually on the sacral area of healthy infants. Mongolian spot is usually present at birth or appears within the first weeks of life. 