Help According to the following usage example of the class (Mystery,which of the following method headers (with type contracts,without docstrings) are necessary to implement for (Mystery tofunction as demonstrated below? Select all that apply.>>> m = Mystery('hello') - Mystery('world')>>> m>>> print(m)hello-world>>> m.eject('Michael', 'Andi', 'Larry')ejectedO def _init__(self):O def _init_(self, x: str):O def _repr_(self) -> str:O def _str_(self) -> str:O def _sub_(self, other: Mystery) -> str:O def _sub_(self, other: Mystery) -> Mystery:O def _neg__(self) -> str:O def _dash_(self, other: Mystery) -> Mystery:O def eject(x: str):O def eject(x: str, y: str, z: str):O def eject(self, x: str, y: str, z: str):O def _neg_(self) -> Mystery:

According to the following usage example of the class (Mystery, which of the following method headers (with type contracts, without docstrings) are necessary to implement for Mystery to function as demonstrated below? Select all that apply.

According to the following usage example of the class (Mystery, which of the following method headers (with type contracts, without docstrings) are necessary to implement for Mystery to function as demonstrated below? Select all that apply.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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