I If the Coefficient of Determination Is 0

i. If the coefficient of determination is 0.81, what is the coefficient of correlation?
ii. If the coefficient of correlation is -0.81, what is the coefficient of determination?
iii. If the dependent variable is measured in dollars, in what units is the standard error of estimate
Measured?

A) +/-0.9; 0.6561; dollars squared.
B) +/-0.9; 0.6561; dollars.
C) 0.6561; 0.9; dollars.
D) 0.6561; +/-0.9; dollars squared.
E) 0.9; -0.9; dollars squared.