According to the Case of Lemon V

According to the case of Lemon v. Kurtzman (1971) , which of the following is one of the ways any statute affecting religion is valid?

A) the statute must have a religious purpose
B) the primary purpose of the statute must either be pro- or anti-religion
C) the statute must have a secular (non-religious) purpose
D) the statute must foster excessive government entanglement with religion