Which of the following would be an effective hedging when passthrough =0.8 ? buy $45 million forward sell 645 million forward buy 24.75 million forward biry put options on. E with total contract size close to 24.75 million Which of the following would be an effective hedging when passthrough =0.8 ? buy $45 million forward sell 645 million forward buy 24.75 million forward biry put options on. E with total contract size close to 24.75 million