Use the Following Information for Questions

Multiple Choice

Use the following information for questions:
A study was conducted to compare the mean sulfur dioxide concentrations for three cities. Independent random samples were obtained from each city and the concentration levels along with some summaries are provided below:
-Suppose the necessary assumptions hold. Using a 10% significance level, which of the following is the correct conclusion?

A) It appears that the mean concentration levels are the same for the three city populations.
B) It appears that at least one of the population mean concentration levels is different.
C) It appears that the population mean concentration levels are all different.