3. Answer parts a), b), c), and d) of this question. a) The IRR investment rule states you should turn down any investment opportunity where the IRR is less than the opportunity cost of capital. True or false? Explain your answer. b) If a bond is currently trading at its face (par) value, then it must be the case that the bond's yield to maturity is equal to its coupon rate. True or false? Explain your answer. c) As the number of stocks in a portfolio is increased, firm-specific risk decreases and approaches to zero. True or false? Explain your answer. d) At an annual interest rate of 7%, the future value of $5,000 in five years is? Detail all calculations that you use