The Issue of Prayers at School Graduations and Ball Games

The issue of prayers at school graduations and ball games has also been addressed by the Supreme Court as recently as 2000 in Santa Fe v. Doe. What is the stance of the Court in regard to prayers at such events where attendance is voluntary?

A) As attendance is voluntary and the participation in the prayer is not required, then the prayers do not violate the Constitution's protections.
B) The prayers are allowed because these events are attended by more adults than minors.
C) The Court failed to rule on the specific issue of prayer but discouraged it because of the public nature of the event.
D) Even though attendance is voluntary, the prayer is unconstitutional because the attendees are forced to participate and because it appears to be a state endorsement of religion.
E) The prayers are unconstitutional because not all religions have equal time allotted to offer their prayers.