Yes this statement is true.
Explanation:
The sale of banana will add the twice contribution in the GDP as because the price is double and the sell of every single unit in the market in comparison of apple is able to add more currency in the economy than a sell of every single unit of apple.
The higher price may affect the sale as people will move to the other alternative but how much sell of banana will take place will able to add more money in the market as compared to apple.
