What is the best practice OR right way to reference class defined variables from within the class functions?

Question

Let's say we have a class with 3 class variables and function funA which calls another funB, while funB uses all 3 class declared variables. So my question is should the funB reference variables from it's body, like this (pseudo-code):

class A{

   var var1 = ...
   var var2 = ...
   var var3 = ...

   funA(){
     funB()
   }

   funB(){
      // lets say we just multiply the values and store a result somewhere
      var result = var1 * var2 * var3
      ...
   }
}

or like this:

class A{

   var var1 = ...
   var var2 = ...
   var var3 = ...

   funA(){
     funB(var1, var2, var3)
   }

   funB(var1, var2, var3){
      // lets say we just multiply the values and store a result somewhere
      var result = var1 * var2 * var3
      ...
   }
}

What is the best practice? Is it dependent on the language? Thanks in advance!

Answer 1

If the second way is no added value, i would prefer the first way.