Look at the following class definitions: class Plant: def __init_ (self, plant_type): self.__plant_type = plant_type def message (self): print("I'm a plant.") class Tree (Plant): def __init_ (self): Plant.__init__(self, 'tree') def message (self): print("I'm a tree.") Given these class definitions, what will the following statements display? p = Plant('sapling') t = Tree () p.message() t.message()