C# oop inheritance

Question

How do you prevent a class from being inherited in C#?

Answer 1

sealed
https://www.w3schools.com/cs/cs_inheritance.php#:~:text=If%20you%20don't%20want,%3A%20Vehicle%20%7B%20...%20%7D

Answer 2

Is this your homework? You seem to have the same worksheet. What have you tried yourself to answer these questions?

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https://www.sololearn.com/discuss/3259555/?ref=app
https://www.sololearn.com/discuss/3259557/?ref=app
https://www.sololearn.com/discuss/3259558/?ref=app
https://www.sololearn.com/discuss/3259549/?ref=app