Read the following premise and answer if the hypothesis is true.
Petasites is a genus of flowering plants in the sunflower family, Asteraceae, that are commonly referred to as butterburs and coltsfoots. They are perennial plants with thick, creeping underground rhizomes and large rhubarb-like leaves during the growing season.
Hypothesis: They are perennial plants commonly found in the west coast. 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 based on the given information. The premise only states that Petasites are perennial plants, but it does not