Q8

Howard Florey conducted a breakthrough experiment in the development and use of antibiotics. He infected eight mice with Streptococcus bacteria. Four mice were given penicillin and survived while the four untreated mice died. What conclusion could be drawn from the data obtained?
A. The experiment should be repeated with more mice.
B. The use of penicillin causes antibiotic resistance in mice.
C. Penicillin may be used on humans safely to treat bacterial infections.
D. Penicillin may have played a role in the survival of the four treated mice.