Option b is the correct answer. Statement 1 is incorrect: The inscriptions on the pillar at Rummindei do not give vivid details of Ashoka's Dhamma, but rather record his visit to Lumbini, the birthplace of the Buddha, and his exemption of Lumbini from tax. Statement 2 is correct: The Nigalisagar inscription records the fact of Ashoka having visited the Konagamana stupa near lumbini, one of the ancient stupas of a previous Buddha, and having enlarged it and erected a pillar there. This inscription provides evidence of Ashoka's pilgrimage to various Buddhist sites and his support for the Buddhist faith.