Concept: The first revelation of the Qur'an was received by Prophet Muhammad (SAW) in the cave of Hira.Explanation: The Angel Jibril brought the first verses from Allah to Prophet Muhammad (SAW).These opening verses are found at the beginning of Suratul 'Alaq.The first word revealed was "Iqra" (Read).Therefore, the first revelation is contained in Suratul 'Alaq.Answer: A. 'Alaq