Immunodeficiency disorders involve malfunction of a person’s immune system. These disorders can result in infections that develop and recur more frequently, are more severe, and last longer than usual. Which of the following is NOT one of the main ways in which immunodeficiency disorders develop?
A) From having a chronic and/or serious disorder, such as diabetes or cancer B) From using certain drugs C) From being present at birth and usually inherited D) From close contact with a person who has an immunodeficiency disorder