A bonus that keeps the original scores

This code is meant to make a new list of scores with a bonus added and leave the original scores as they are. It runs without an error, but the original scores change too. Fix just one place inside the function so that the output is Before: [70, 85, 90] and After: [75, 90, 95]. Grading also calls the function with a different list.

Code to fix

def add_bonus_all(scores, bonus):
    for i in range(len(scores)):
        scores[i] = scores[i] + bonus
    return scores

before = [70, 85, 90]
after = add_bonus_all(before, 5)
print("Before:", before)
print("After:", after)