I the Chi-Square Goodness-Of-Fit Test Can Be Applied If There

i. The chi-square goodness-of-fit test can be applied if there are equal or unequal expected frequencies.
Ii) For a goodness-of-fit test, the number of degrees of freedom is determined by k - 2, where k is the number of categories
Iii) The sum of the expected frequencies in a goodness-of-fit test need not equal the sum of the observed frequencies.

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) is a correct statement, but (ii) and (iii) are false.