Selling Price and Percent of Advertising Budget Spent Were Entered $\mathrm { R } ^ { 2 }$

Selling price and percent of advertising budget spent were entered into a multiple regression to determine what affects flat panel LCD TV sales. The adjusted $\mathrm { R } ^ { 2 }$ value was reported as $83.3 \%$ . This means that

A) Selling price and amount spent advertising do not describe TV sales well.
B) $83.3 \%$ of the variance in TV sales can be accounted for by selling price.
C) $83.3 \%$ of the variance in TV sales can be accounted for by percent of advertising budget spent.
D) $83.3 \%$ of the variance in TV sales can be accounted for by the model including both selling price and percent of advertising budget spent.