At what age Prophet Muhammad (PBUH) received the first wahi (the first Quranic verses were revealed)?

Prophet Muhammad (PBUH) received the first revelation (wahi) at the age of 40. This momentous event occurred in the Cave of Hira, located on Jabal al-Nour near Mecca, during the month of Ramadan. The angel Jibreel (Gabriel) appeared to him and commanded him to "Read!" (Iqra!), marking the beginning of his prophethood and the revelation of the Holy Quran. Options A (30), B (35), and D (45) are incorrect. While 30 and 35 represent significant periods in his life, such as his marriage to Khadijah and his role in resolving the Black Stone dispute, they do not correspond to the commencement of divine revelation. The age of 40 is universally recognized as the age of prophethood in Islamic tradition, signifying a period of maturity and spiritual readiness.