Write a class Student() such that it has an attribute 'score (that is initialized with 10) and three methods: 1. add_score(]: adds 10 to the score 2. decrease_score(): decreases score by 10 3.-str-0: returns the current score (should return a string) Example p Student) print(p) 10 p.add_score0) print(p) 20 pdecrease_score print(p) 10