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Warrants (Tables)
6 Months Ended
Sep. 30, 2020
Warrants [Abstract]  
Schedule of estimated fair value of warrants using the binominal pricing model

   Common Stock
Warrants
   Common Stock
Warrants
 
   September 30,
2020
  

March 31,

2020

 
         
Stock price  $0.97   $1.77 
Exercise price  $3.10   $3.10 
Annual dividend yield   -%   -%
Expected term (years)   0.30    0.81 
Risk-free interest rate   0.10%   0.71%
Expected volatility   158.08%   62.08%