In a study designed to predict blood cholesterol levels from the amount of daily saturated fat in grams (X₁) and the number of hours of daily exercise (X₂) we determine that the slope of X₁ is 4, the slope of X₂ is 6 and the y-intercept is 170. Which of the following is the regression equation for this data?

A.Y = 170 + 4(X₁) + 6(X₂)

B.Y = 170 + 4(X₁) 6(X₂)

C.Y = 170 + 2(X)

D.Y = 170 - 4(X₁) 6(X₂)