Question 1 An investigation was set up to study the effect of an antibiotic on three strains of bacteria (A, B and C). The plates were incubated at 37°C for 48 hours. The diagram of plates 1, 2 and 3 in the bottom row above show the results of the investigation. Agar plates were set up as shown below. Study the investigation and answer the questions that follow. What is the aim of this investigaion?