I Nonparametric Tests of Hypotheses, Which Are Also Called Distribution

i. Nonparametric tests of hypotheses, which are also called distribution free tests, require the population to be normally distributed.
Ii) The computed value of chi-square is always positive because the difference between the observed frequencies and the expected frequencies are squared.
Iii) The shape of the chi-square distribution changes for each number of degrees of freedom.

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) All statements are false