Что выведет код?

def search(d, target):
    for k, v in d.items():
        if k == target:
            return v
        if isinstance(v, dict):
            result = search(v, target)
            if result is not None:
                return result
    return None

data = {'a': {'b': {'c': 42}}, 'x': 1}
print(search(data, 'c'))