Which of these statements about the cult of the Assassins is false?
a. They were able to kill two caliphs, Nizam al-Mulk, and important Sunni Ulama.
b. They were terrorists that used murder for its propaganda value and thus creating an environment of fear and anxiety within the targeted community.
c. Its Fedayeen would smoke hashish in order to prepare themselves for daring operations.
d. They believed that the Quran had an exterior and an interior meaning, and only through intensive indoctrination and training can recruits reach this deeper interior level.