What Is the Purpose of the Establishment Clause of the First

What is the purpose of the establishment clause of the First Amendment?

A) It requires Congress to establish a national religion to be used as a foundation for other religious efforts.
B) It prohibits the display of any religious symbols, gestures, or thoughts at any level of government.
C) It prohibits the government from establishing an official religion for the country.
D) It establishes Christianity as the national religion, in keeping with the beliefs of the founding fathers.
E) It ensures that any and all religious beliefs have equal and full support of the federal government.