$\backslash$table$[[$Obs$,$Day,Demand,,Obs $AA,$Day,Demand$],[1,$Mon,$33,,12,$Fri,$54],[2,$Tue,$34,,13,$Sat,$95],[3,$Wed,$37,,14,$Sun,$92],[4,$Thu,$42,,15,$Mon,$58],[5,$Fri,$44,,16,$Tue,$63],[6,$Sat,$79,,17,$Wed,$67],[7,$Sun,$86,,18,$Thu,$70],[8,$Mon,$51,,19,$Fri,$74],[9,$Tue,$50,,20,$Sat,$114],[10,$Wed,$51,,21,$Sun,$119],[11,$Thu,$52,,,,]]$

Refer to Graph $8\mathrm{.}1.$ What is the seasonal index for the first Saturday in the data set?

Select one:

A$.0\mathrm{.}64$

B$.0\mathrm{.}58$

C$.1\mathrm{.}69$

D$.1\mathrm{.}56$