Calculate the durations and volatilities of securities $A,B,$ and $C.$ Thelr cash flows are shown below. The interest rate is $9\%.($Do not round intermediate calculatlons. Round "Duration" to $4$ decimal places and "Volatillty" to $2$ decimal places.$)$

$\backslash$table$[[,$Period $1,$Period $2,$Period $3,$Duration,Volatility$],[$A$,120,120,200,,$years,$],[$B$,100,100,280,,$years,$],[$C$,90,90,270,,$years,$]]$