Consider the Following to Answer the Question(s) Below

Multiple Choice

Consider the following to answer the question(s) below:
An Internet service provider is interested in testing to see if there is a difference in the mean weekly connect time for users who come into the service through a dial-up line, DSL, or cable Internet. To test this, the ISP has selected random samples from each category of users and recorded the connect time during a week period. The following is partial Excel output for the data.
-The correct null hypothesis is

A) mean weekly connect times are equal regardless of the method of connection.
B) mean weekly connect times are not all equal regardless of the method of connection.
C) two mean weekly connect times are equal, and one mean is different.
D) method of internet connection has an impact on average weekly connect times.
E) only DSL and Cable Internet are significant.