Which Sales Forecast Is Correct Based on the Regression Model

Multiple Choice

Which sales forecast is correct based on the regression model described below if the company decides to spend $10,000 on advertising:
Y = 70.5 + 3.0x
Where: y = unit sales in thousands
X = dollars spent on advertising on thousands
Where are forecasted unit sales?

A) 100.5 units.
B) 30,070.5 units.
C) 73.5 units.
D) 30.503 units.
E) 1,000.5 units.