both questions pls

Which one of the following is not a correct statement? O a. Duration of a bond in general, is not the same as time-to-maturity of a bond O b. Duration of a bond is not a measure of bond price volatility O c. Duration of a bond is a weighted average life of a bond Od. Duration of a bond indicates how a bond price will reaction different interest rate environments Oe. Duration of a bond captures both price and reinvestment risk QUESTION 7 The data for the two stocks is provided in the following table Stock Average Return Risk (Std. Dev.) A5% 3.75% B 8.13 5.63% What is the range of risk associated with possible portfolio combinations the rates of returns are perfectly negatively a. Range of risk between 5% and 8.13%. b. Range of the risk: between 3.75% and 5.63% c. Range of the risk: between 0