A few substances are listed in the box.
Which of the following statements are correct regarding these substances?
I. Solutions (i), (ii), (iv) and (vii) change the colour of methyl orange indicator to red.
II. Solutions (ii), (iii) and (v) show no change in colour with phenolphthalein indicator.
III. Solutions (vi) and (vii) show no change in colour of blue litmus solution.
IV. China rose indicator turns magenta in solutions (iii) and (v).
AI and III only
BIII and IV only
CII, III and IV only
DI, III and IV only