Amna estimates her opportunity cost on investments to be 12% compounded annually. Which one of the following is the best investment opportunity? a. To receive Rs 50,000 today b. To receive Rs 250,000 at the end of 14 years c. To receive Rs 40,000 at the end of 4 years and $120,000 8 years later at the end of the year d. To receive Rs 5,000 at the beginning of each 6-month period for 9 years compounded semiannually e. To receive Rs 60,000 at the end of 3 years