Consider the following code snippet implementing the Observer pattern:

Consider the following code snippet implementing the Observer pattern:

class Subject:
    def __init__(self):
        self.observers = []
    def register(self, observer):
        self.observers.append(observer)
    def notify(self, message):
        for obs in self.observers:
            obs.update(message)

class Observer:
    def update(self, message):
        print(f"Received: {message}")

subject = Subject()
obs1 = Observer()
obs2 = Observer()
subject.register(obs1)
subject.register(obs2)
subject.notify("Hello")

What will be the output when subject.notify("Hello") is called?