Can not output CSV file

I am trying to get the name of the object my raycast hit and at what coordinates they got hit at. outputted as data into a CSV file. However I get the following errors,

 UnauthorizedAccessException: Access to the path "C:\myOutput.csv" is denied.
 System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share

Is there something I must fix in my code, to stop the restriction? Here is my code

 var file = @"C:\myOutput.csv";
             using (var stream = File.CreateText(file))
             {
             
             string[] cars = {hit.collider.gameObject.name};
             //string [] name = 
             //string second = image.ToString();
             string csvRow = string.Format("{0},{1}", cars, screenPoint);
 
             stream.WriteLine(csvRow);
             
             }