17 The popularity of home schooling has traditionally been blamed on the rigidity of the examination system and parents’ dissatisfaction with teaching methods. (A)Parents have long blamed the inflexible test system and unsatisfying teaching methods and sent their children to cram schools to receive popular education. (B)The inflexible test system and parents’ complaint about the instructional approaches are two conventional reasons for the public’s welcome of home schooling. (C)Receiving home education has become a popular tradition because of the inflexible test system and parents’ annoyance at the instructional interventions. (D)Home schooling has become outdated due to the public’s blame on the inflexible test system and parents’ complaint about the teaching techniques.