I Multiple R² Measures the Proportion of Explained Variation

i. Multiple R² measures the proportion of explained variation. ii. 90% of total variation in the dependent variable is explained by the independent variable for a multiple R² = 0.90.
iii. The multiple standard error of estimate measures the variation about the regression plane when two independent variables are considered.

A) (i) , (ii) , and (iii) are all correct statements.
B) (i) and (ii) are correct statements but not (iii) .
C) (i) and (iii) are correct statements but not (ii) .
D) (ii) and (iii) are correct statements but not (i) .
E) (i) , (ii) , and (iii) are all false statements.