E can be true as it can be false.
Since we are looking for something that must not be true, E it is.
Yes - That is the part I was missing. "beautiful cat" is a "floating set" that has an intersection with "irritating cat "set.
1) Now, "beautiful cat" can be a subset of "persian cat" and in that case E is flase.
2) But if you follow the my Venn diagram it can also be true.
Since it can be true or false, it is the answer.
OA is E.
"Education is what remains when one has forgotten everything he learned in school."