According to the Supreme Court in Michigan V

According to the Supreme Court in Michigan v. Sitz, involving sobriety checkpoints, detaining a car briefly at a sobriety checkpoint:

A) requires reasonable suspicion to think that the driver is driving under the influence.
B) requires probable cause to think that the driver is driving under the influence.
C) requires clear and convincing evidence to think that the driver is driving under the influence.
D) requires no individualized suspicion because of the importance of the State's interest in addressing the drunk driving problem.