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Stock option and bonus plans (Tables)
12 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]  
Stock option summary

A summary of the stock options activity is as follows:

 

     
    Number of options   Weighted
average
exercise price
         
  Outstanding at March 31, 2019       850,000     $ 1.50  
  Exercised       (425,000 )   $ 1.50  
                     
  Outstanding at March 31, 2020       425,000     $ 1.50  
                     
  Outstanding at March 31, 2021       425,000     $ 1.50  

 

Information regarding stock options

The following table summarizes information about all stock options of the Company outstanding as at March 31, 2021:

 

    Number   Weighted average   Exercisable
Weighted average   outstanding at   remaining life   shares at
exercise price   March 31, 2021   (years)   March 31, 2021
                             
$ 1.50       425,000       4.0       425,000