A 36 years male presented with complain of production cough and fever for last 2 months.He has undergone kidney transplantation 2 years back. His sputum examination revealed many gram positive filamentous bacteria that showed acid fastness with modified Ziehl-Neelsen staining (1% H2SO4. The most likely etiological agent is -

A 36 years male presented with complain of production cough and fever

1.	A 36 years male presented with complain of production cough and fever for last 2 months.He has undergone kidney transplantation 2 years back. His sputum examination revealed many gram positive filamentous bacteria that showed acid fastness with modified Ziehl-Neelsen staining (1% H2SO4. The most likely etiological agent is -
A.	Actinomyces israelii
B.	Nocardia asteroides
C.	Blastomyces dermatitidis
D.	Cryptosporidium parvum
Answer» C. Blastomyces dermatitidis