The Frustrated Patient in Hypotonic Labor Complains "My Doctor Won't

The frustrated patient in hypotonic labor complains "My doctor won't induce my labor because of some silly Bishop score. He said I was a 4. What kind of magic number do I need?" The nurse explains that prior to induction the patient should be a Bishop score of at least:

A) 6
B) 8
C) 10
D) 12