In the total market risk equation for security i as follows: $$\sigma _ { i } ^ { 2 } = \beta _ { i I } ^ { 2 } \sigma _ { I } ^ { 2 } + \sigma _ { a } ^ { 2 }$$ which term denotes the market risk of security i ?
a. $\quad \sigma ^ { 2 }_ {t } $
b. $\quad \beta ^ { 2 }_ \mathrm { tI }$
c. $\quad \sigma ^ { 2 }$ εt
d. $\quad \beta ^ { 2 }_{ tI} \sigma ^ { 2 }_ { t} $

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The Answer of In the total market risk equation for security i as follows: $$\sigma _ { i } ^ { 2 } = \beta _ { i I } ^ { 2 } \sigma _ { I } ^ { 2 } + \sigma _ { a } ^ { 2 }$$ which term denotes the market risk of security i ?
a. $\quad \sigma ^ { 2 }_ {t } $
b. $\quad \beta ^ { 2 }_ \mathrm { tI }$
c. $\quad \sigma ^ { 2 }$ εt
d. $\quad \beta ^ { 2 }_{ tI} \sigma ^ { 2 }_ { t} $

In the Total Market Risk Equation for Security I as Follows