Which of the Following Is the United Nations' Attempt at a Definition

Which of the following is the United Nations' attempt at a definition of terrorism?

A) It is convoluted and self-referential, making it challenging to understand.
B) It included a clause referring to state terrorism, which made it difficult to pass.
C) It was too lenient on individuals knowingly contributing to terrorism.
D) It excluded those nations involved in the United Nations so as to increase membership to avoid repercussions.