Which statements about the Mormon religion and its founders are true? Choose all answers that are correct.

A. Early Mormons practiced polygamy, meaning a man could have more than one wife.

B. When Brigham Young was murdered, Mormons went west to find a new leader.

C. Mormons were persecuted for refusing to let new members into their church.

D. The Church of Jesus Christ of Latter-Day Saints was founded by Joseph Smith.