How many objects of type string will be created du

How many objects of type string will be created during the following code execution?

  string s = "sdfsg";

  if(s.ToLower().Substring(1,2).EndsWith("exe"));

1. "sdfs"
2. Will be created as a result of the s.ToLower ()
3. Will be created as a result of the .Substring ()
4. "exe"

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