Inherited Immunodeficiency Diseases Result from a Single Gene Defect in One

Inherited immunodeficiency diseases result from a single gene defect in one component of the immune system. By identifying the class of microbial pathogens a given immunodeficient individual becomes susceptible to, studies of these diseases indicate:

A) Which type of antibiotics each patient should be given
B) The essential immune mechanism required for resistance to each category of pathogen
C) Whether the disease is a genetically inherited or an acquired form of immunodeficiency
D) Whether the immunodeficiency disease is likely to be transmitted to another individual
E) Whether the disease is likely to be life-threatening or not