6 In the regression output, what does -49.59 (rounded to 2 decimal places) represent? If you do not see this figure in your regression output, you should re-do your regression. 1 point When price increases by 49.59 units, while holding advertising unchanged, sales decreases by 1 unit on average. When price increases by 1 unit, while holding advertising unchanged, sales decreases by 49.59 units on average. When price decreases by 49.59 units, while holding advertising unchanged, sales increases by 1 unit on average. When price increases by 1 unit, while holding advertising unchanged, sales increases by 49.59 units on average