Patients with cell-mediated immunity dysfunction are susceptible to infections attributed to pathogenic intracellular bacteria. Examples of these organisms include:

1) Salmonella typhi
2) Bacterioides fragilis
3) Listeria monocytogenes
4) Staphylococcus aureus

A) 2,3
B) 1,3
C) 1,2
D) 3,4