Can please check the correct answers in this data-hiding section?

Question

For a question I gave the correct answer first and it showed me as wrong answer.Then, when I entered the same answer once again it showed me as the correct answer. Can the designer of the site please check this and fix it?

Answer 1

I assume it is
Python > Object-oriented Programming > Data-hiding > 3rd question
? Often times, it is the case where some unperceived minor differences exist between the first and second answer provided. If you can show us how to reproduce the "bug", then maybe we can file a bug report and provide a feedback to the devs. As far as it goes, I've met no peculiar problems while attempting the question.

Answer 2

How would the attributes _a of the class be accessed from outside the class