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D. FAIR VALUE MEASUREMENTS (Details) - USD ($)
Jun. 30, 2019
Sep. 30, 2018
Derivative instruments $ 10,732,830 $ 9,317,064
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)    
Derivative instruments 0 33
Significant Other Observable Inputs (Level 2)    
Derivative instruments 0 0
Significant Unobservable Inputs (Level 3)    
Derivative instruments $ 10,732,830 $ 9,317,031