Home » Programming Language (coding) » Python MCQs » Which of the following is invalid?Which of the following is invalid? Mr. Answer Which of the following is invalid? A. __str__ = 1 B. _a = 1 C. __a = 1 D. none of the mentioned Correct Answer: Option D. none of the mentioned Upvote 👍 Take Part in Discussion: Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment * Save my name, email, and website in this browser for the next time I comment. Solve : * 24 + 17 =