Question: For the Product class you are designing, you would like the price to be readable by anyone, but changeable only from within the class. Which property declaration implements your design?

1. Option 1
2. Option 2 ([reference](https://kotlinlang.org/docs/properties.html#getters-and-setters))
3. Option 3
4. Option 4

Answer: The correct answer of the above question is Option B:Option 2 ([reference](https://kotlinlang.org/docs/properties.html#getters-and-setters))