Review the diаgrаm belоw аnd then answer ALL оf the questiоns that follow. LABEL your answers with the letter of the question. a) Based on the graph, which antibiotic would you prescribe to patients for the treatment of ulcers? Justify your response using the data provided in the graph. b) If the standard error bar of Test Group 1 extended upward and overlapped with Test Group 2's error bar, would it change your answer to a? Why or why not? c) What is a placebo and why do scientists use them in these types of studies? Remember, answer in complete sentences and label your answers with a, b, c, for clarity.