Any such rule does not exists.
In queue, we have rules to insert from rear and delete from front.
But, not in CLL and moreover, in memory it has no predefined head or tail node. Also, what is the start and end of CLL in context of memory .
I think if the question would have been maintaining O(1) complexity, then it makes some sense .
Also, options say $$should\ be$$ done .
Even, though you are also saying
yes D is correct option, both statements are false here
Both statements are false here :)