Consider this code:

Consider this code:

class Employee:
    def __init__(self, name, salary):
        self.name = name
        self.salary = salary

class Manager(Employee):
    def __init__(self, name, salary, department):
        super().__init__(name, salary)
        self.department = department

m = Manager("John", 5000, "Sales")
print(m.name, m.salary, m.department)

Which OOP principles are demonstrated here?