-3 times 2 is -6 and 2 times 2 is 4. So after the transformation we are left with (-6,4). Since 900 is just 360 to times plus 180; rotating it basically means that it will end up in the same place and if we rotated it 180. These means we need to switch the signs on the numbers (positive to negative and vice-versa). Which gives us the answer of (6,-4).
All of the following were among the three major movements of non cooperation and non violence led by Mahatma Gandhi except Independence March. The correct option among all the options that are given in the question is the third option or option "C". I hope it helps you.