In the Parable of the Good Samaritan (Luke 10:25-37), what legal precedent did the lawyer try to invoke when asking Jesus, 'Who is my neighbor?'

A The Levitical laws concerning purity and defilement from contact with the dead. B The Deuteronomic laws regarding assistance to the poor and needy within the Israelite community. C The Mosaic laws defining familial obligations and inheritance rights. D There was no legal precedent; the lawyer was testing Jesus' knowledge of rabbinical interpretation.