We invested in mutual funds with return same as the stock market index. The investment today has value 80000 EURO. The index today is 800 EURO and we believe that the dividend yield is 4% yearly. . We are afraid that there will be a big collapse in stock market but we want to keep the investment we have and buy options which will compensate us in case of stock market collapse. At the derivatives market, the only options which exist in the index expire in 1 year and have exercise price 750 EURO. The risk free interest rate (continuous) is 2.5% yearly and the index has =0.2 yearly. What kind of options we will buy , call or option , how many and what will be the cost?