John wants to invest an amount of $. 10000 every year to buy a house at the end of 12 years. For this purpose, he wants to invest some money in a saving bank but does not know the exact amount of money he will get after 12 years

a) What amount will he receive assuming an interest rate of 3.005%? (In details)

b) What amount will he receive assuming an interest rate of 6.50%? ( In details)

c) Suggest the option which will be enough to meet his house which is estimated to be $. 100500 ? ( In details)