Which Statement About Children and Stepfathers Is TRUE

Which statement about children and stepfathers is TRUE?

A) Relationships between children and stepfathers tend to be better when there are stepsiblings living with the family as well.
B) Children with stepfathers tend to have higher rates of disruptive problem behaviours than do children in intact families.
C) Conflict between children and biological fathers is more common than conflict between children and stepfathers.
D) Stepfathers rarely contribute to supervision of their stepsons.