     20



    (option)  ,  
 ,          
         
         
    . ,     
  ,   ,   
  . ,   ,     ,
  .

   ,   . 
        -
.        -
   .   ,    
,   .      
      .

 

         .    
      .  ,   -
   (..  ,   )   
       ,  
 .         .

20.1.1    

        (call option)  .
     ()   
           
  .      ,
   :

1. ,     .

2.   .

3.   ,    (exercise price),  
.

4. ,    ,    (expiration date).