Read the following premise and answer if the hypothesis is true.
How to dress for a high school dance (girls )<br>Go for a formal gown. If you are attending a formal dance like a winter formal or prom, you should go for a formal outfit. This means a formal dress that is floor length or no shorter than three inches above your knee, with a modest neckline.
Hypothesis: formal gown was worn by fiona. Is the answer "Yes", "No", or "It's impossible to say"? Respond with only the answer and no additional text.
It's impossible to say
It's impossible to say. The premise only discusses what girls should wear to a high school dance, but it does not provide any information