@Jurgen_klopp i think it can be transferred from father to children, this was published in way back 2018, and the publisher is also well known. I think you are right.
@sic_mundus_creatus_est bhai i am not disputing with anyone's knowledge, i have had already marked it wrong, nothing to gain from manipulating my marks for a temporary respite. Simply puting out the facts i recently looked up for. The aforesaid articles were published recently whereas the ncerts have not been revised sincec ages, and the use of extreme statements such as "entirely" might hold clue to the answer. Again not disputing with anyone. Have faith in yourself and proceed. All the best.
If the paper was difficult, it was difficult for all, try to make the best out of what has been served, nothing is gonna come across by blaming UPSC for setting questions paper like the way they do, they have to select 700 out of 10 lacs by hook or crook. Understand this, digest this, take this paper like any other exam, have a backup. Rest is out of our hands.
