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

How to grill chicken breasts<br>Prepare the grill to help the chicken cook better. Use a grill scraper to remove any residue from the grill. Lightly spray the cooking surface with non-stick spray so the chicken will not stick to it.

pick from the following.
a). Yes;
b). It's impossible to say;
c). No;
Hypothesis: A grill scraper helps scrape off old chicken.



a).