The cephalosporin antibiotics are indicated for the treatment of gram-positive organisms and ___________ with sensitive organisms when __________ are ineffective (due to resistance) or pt is _____________.

A) Gram-negative infections; penicillins; allergic
B) Fungal infections; aminoglycosides; immunocompromised
C) Viral infections; macrolides; resistant
D) Parasitic infections; fluoroquinolones; resistant