Selling Price and Amount Spent Advertising Were Entered into a Multiple

Selling price and amount spent advertising were entered into a multiple regression to determine what affects flat panel LCD TV sales.The regression coefficient for Advertising was found to be +3.0926, which of the following is the correct interpretation for this value?

A) While price negatively affects the number of Sony Bravia LCD TV's sold, an increase in the amount of money spent on advertising will result in at least 3 additional TV's sold.
B) At a given price, increasing the amount spent on advertising the Sony Bravia over the previous quarter will increase sales by 3.0926 units, on average.
C) A one percent increase in the amount spent on advertising the Sony Bravia over the previous quarter will increase sales by 3.0926 units, on average.
D) At a given price, a one percent increase in the amount spent on advertising the Sony Bravia over the previous quarter is associated with an increase in sales of 3.0926 units, on average.
E) None of the above.