The Nurse Notes That a 1-Day-Old Infant's Immunoglobulin M (IgM)

The nurse notes that a 1-day-old infant's immunoglobulin M (IgM) antibodies are elevated. Which is the least likely cause for this elevation?

A) Placental leakage
B) Intrauterine exposure to syphilis
C) Intrauterine exposure to TORCH (toxoplasmosis, rubella, cytomegalovirus, herpesvirus hominis type 2 infection) syndrome
D) Maternal-fetal transfer of IgM while in utero