Considering the social and religious context of the first century, what was the most unconventional aspect of Jesus' interaction with the Samaritan woman at the well in John 4?

A The mere fact that He asked her for water, demonstrating basic human need. B That He, as a Jewish Rabbi, engaged in theological discussion with a woman, particularly one of Samaritan ethnicity with a questionable past. C That He revealed to her that He was the Messiah, a revelation typically reserved for His closest disciples initially. D The explicit disregard for ritual purity laws by sharing a common drinking vessel.