This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
Bishop scoring of more than ----- indicates labor has begun? 
Select and explain. 
A. 3, B. 5, C. 6, D. 7
C: 6
Answer: C: 6 
Explanation: Bishop's preinduction cervical scoring system:FactorsScore0123CervixDilatation (cm)Closed1-23-45+Cervical length (cm)0-30%40-5060-70Fully taken up> 80%ConsistencyFirmMediumSoft-PositionPosteriorMidlineAnterior-Head station-3-2-1, 0+1, +2Total score= 13, ourable score = 6-13, Unfabourable Score= 0-5