HIV patient (CD4<50) with diarrhea? (3)
a) Cryptosporidium, Isospora, Mycobacterium avium complex (MAC)
b) Cryptococcus neoformans, Histoplasma capsulatum, Toxoplasma gondii
c) Pneumocystis jirovecii, Toxoplasma gondii, Candida esophagitis
d) Cryptococcus neoformans, Isospora, Pneumocystis jirovecii