Change the following into reported speech by choosing the right answer from the given options
‘This exercise is full of mistakes’, the teacher said angrily.
i) The teacher said angrily that this exercise is full of mistakes.
ii) The teacher said angrily that this exercise was full of mistakes.
iii) The teacher said angrily that exercise was full of mistakes.
iv) The teacher said angrily that that exercise was full of mistakes.