The ToUpper and ToLower methods can be used to return a copy of a String in all uppercase or lowercase letters,respectively.

Name: The ToUpper and ToLower methods can be used to return a copy of a String in all uppercase or lowercase letters,respectively.
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This is correct. The ToUpper and ToLower methods are used to convert a string to all uppercase or lowercase letters, respectively. They return a new string with the converted characters while leaving the original string unchanged.

The ToUpper and ToLower Methods Can Be Used to Return