Describe the scope of the variables in this code. Class pet: def __init__(self,strspecies,strname): self. Species = strspecies self. Petname = strname def __str__(self): return self. Species + " named " + self. Petname def changename(self, newname): self. Petname = newname class petcarrier: size = 'medium' color = 'red' the scope of petname. The scope of color is.