The C# Problem is broken. It adds another newline at the end of the final test case, so it's impossible to match the expected solution.

"Age is not valid, setting age to 0. You are young. You are young.

You are young. You are a teenager

You are a teenager You are old.

You are old. You are old.

"

When it is saying it should be:

"Age is not valid, setting age to 0. You are young. You are young.

You are young. You are a teenager

You are a teenager You are old.

You are old. You are old. "

I can't modify the main, so I'm stuck failing test cases.