I the Number of Degrees of Freedom Appropriate for the Chi-Square

i. The number of degrees of freedom appropriate for the chi-square goodness-of-fit test is the number of categories minus 2. ii. If there are extremely large differences between observed and expected frequencies the correct decision is to reject H₀.
iii. There are 2 degrees of freedom for a contingency table classifying three levels of income with each gender.

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.