Monthly demand for a new smart phone is given below:

Sales Demand

Month

2016

2017

2018

Jan

80

85

105

Feb

70

85

85

Mar

80

93

82

Apr

90

95

115

May

113

125

131

Jun

110

115

120

Jul

100

102

113

Aug

88

102

110

Sept

85

90

95

Oct

77

78

85

Nov

75

72

83

Dec

82

78

80

If the yearly demand for year 2019 is estimated at 1200 units, forecast monthly demand of year 2019. by using minitab

Risk is the risk of a decline in a bond's value due to an increase in interest rates. this risk is higher on bonds that have long maturities than on bonds that will mature in the near future. risk is the risk that a decline in interest rates will lead to a decline in income from a bond portfolio. this risk is obviously high on callable bonds. it is also high on short-term bonds because the shorter the bond's maturity, the fewer the years before the relatively high old-coupon bonds will be replaced with new low-coupon issues. which type of risk is more relevant to an investor depends on the investor's , which is the period of time an investor plans to hold a particular investment. longer maturity bonds have high risk but low risk, while higher coupon bonds have a higher level of risk and a lower level of risk. to account for the effects related to both a bond's maturity and coupon, many analysts focus on a measure called , which is the weighted average of the time it takes to receive each of the bond's cash flows. conceptual question: which of the following bonds would have the largest duration? a)10year-zero coupon bonds b)10year-7% annual coupon bonds c)10year-3% annual coupon bonds d)5year-3% annual coupon bonds e)3year-7% annual coupon bonds