4. An InvestDec Corp. bond has a 20% coupon rate and an 120 000 HUF face value. The bond has 4 years to maturity. The required rate of return is 10 percent. Interest is paid annually and the principal amount will be paid equally in the four last years of the maturity. a) Give the future payments of the bond. b) What is the present value of the bond in the case of annual coupon payments? c) Give the definition of the bond. d) Explain the calculation of the yield to maturity