Of the 3 options for the following scenario, I have seen 3 different answers with no logical explanation. What can you tell me to believe that you have the correct answer?

The question is: "The owner of a professional basketball team claims that the mean attendance at games is over 30,000 and therefore the team needs a new arena. Determine whether the hypothesis test for this claim is lefttailed, right-tailed, or two-tailed."