Read the following paragraph and determine if the hypothesis is true:

Fan and Mortar Geysers are two geysers in the Upper Geyser Basin in Yellowstone National Park. For the past several decades, they have erupted in concert with one another and are generally talked about together. The records detailing these geysers' known eruptive history shows that they have been infrequent and irregular performers.

Hypothesis: The Upper Geyser Basin is home to just under a dozen geysers
It's impossible to say