Who discovered Penicillin?

Who discovered Penicillin?
Past Papers: PPSC Assistant (BS-16) — Past Paper MCQs
A: Alexander Fleming
B: Louis Pasteur
C: Howard Florey
D: None of these

Fleming observed penicillin’s antibacterial effects in 1928. Florey and Chain later purified and mass-produced it. Penicillin opened the antibiotic era in medicine.