Graph $8\mathrm{.}1$

Data plotted in the graph appear in the table below.

Obs # Day Demand $$ Obs # Day Demand

$1$ Mon $3312$ Fri $54$

$2$ Tue $3413$ Sat $95$

$3$ Wed $3714$ Sun $92$

$4$ Thu $4215$ Mon $58$

$5$ Fri $4416$ Tue $63$

$6$ Sat $7917$ Wed $67$

$7$ Sun $8618$ Thu $70$

$8$ Mon $5119$ Fri $74$

$9$ Tue $5020$ Sat $114$

$10$ Wed $5121$ Sun $119$

$11$ Thu $52$

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

Question $7$Select one:

A$.$

$1\mathrm{.}49$

B$.$

$0\mathrm{.}67$

C$.$

$1\mathrm{.}54$

D$.$

$0\mathrm{.}65$