The correct solution is option a, resistant to all antibiotics.
Pandrug-resistant bacteria are defined by the bacterial strain, which is tolerant to all antimicrobial drugs currently available.
Non-susceptibility to all drugs in all antimicrobial categories was termed Pan Drug Resistance(PDR).
Resistance strategies are easily adopted by PDR microbes. Pan-drug-resistant Acinetobacter baumannii, pan-drug-resistant Klebsiellapneumonia, and pan-drug-resistant Pseudomonas aeruginosa are only a few examples.
Because of their high vitality, colonization rate, and antibiotic resistance, these bacteria are frequently transmitted to patients.