A Student Nurse Asks, "What Is Carrier Testing?" Which Response

A student nurse asks, "What is carrier testing?" Which response by the nurse educator is most appropriate to answer the student nurse's question?

A) "Carrier testing involves testing an asymptomatic individual for carrier status for a genetic condition."
B) "Carrier testing is used to establish a diagnosis of a genetic disorder in an individual who is symptomatic or has had a positive screening test."
C) "Carrier testing is testing to identify a fetus with a genetic disease or condition. Some prenatal testing is offered routinely; other testing may be initiated due to family history or maternal factors."
D) "Carrier testing follows in vitro fertilization (IVF) testing to identify embryos with a particular genetic condition."