When Researching Self-Reporting of Religious Attendance in the United States

When researching self-reporting of religious attendance in the United States and Canada,what trend did researchers discover?

A) People underestimate how often they attend religious services.
B) Young people attend religious services more often than was first thought.
C) People overestimate how often they attend religious services.
D) Christians in the United States attend services more often than any other religious group.