2. The final answer key of shift 3 is erroneous. "That which cannot be corrected" : INCORRIGIBLE should be the answer !! What to do now ?
You can do nothing now if its the final answer key published by them. Even then, if you wish to claim your say, you will have to move to courts and legally a case will be filed, and then other processes will take place. It will be a hectic thing to carry on with. So, try to accept their answers