Option b is the correct answer. Gautama Buddha was elevated to the position of God during the period of Kanishka, the Kushan emperor who ruled from 127 to 151 CE. Kanishka was a great patron of Buddhism, and he convened the Fourth Buddhist Council in Kashmir. The council divided Buddhism into 2 sects- Mahayana and Hinyana. Mahayana Sect declared the Buddha a god due to his compassion and willingness to help all living beings. The elevation of the Buddha to the position of God was a gradual process that began in the early centuries of Buddhism. It was influenced by the Hindu tradition of deifying great teachers and by the spread of Buddhism to China and other parts of Asia, where there was a more pronounced tendency to worship gods and goddesses.