Which of the following is invalid?Options_c = 1__cod__ = 1none of the mentioned__c = 1

To determine which option is invalid, let's analyze each of the provided options.

1. Options_c = 1: This seems to suggest assigning the value 1 to a variable named Options_c. This is a valid statement in many programming languages.

2. cod__ = 1: This is assigning the value 1 to a variable cod__, which is valid as well. The use of double underscores at the end is permissible.

3. none of the mentioned: This option suggests that all of the previous expressions are valid.

4. c = 1: This is a straightforward assignment of 1 to the variable c, which is also valid.

Conclusion

Given that all the provided statements appear to be valid variable assignments in common programming languages, the option "none of the mentioned" is effectively stating that there is no invalid option. Therefore, none of the provided statements on their own appears invalid.

Final Answer

None of the provided options are invalid; thus, "none of the mentioned" is the correct conclusion.