Kohlberg and His Colleagues Eventually Dropped Stage 6 from His

Kohlberg and his colleagues eventually dropped stage 6 from his theory of moral reasoning because:

A) longitudinal research showed that none of the participants showed stage 6 moral reasoning, and clear-cut expressions of "universal moral principles" are very rare.
B) other researchers, such as Carol Gilligan, argued that stage 6 was more typical of male moral reasoning and did not reflect how females reasoned.
C) the longitudinal research needed to support stage 6 moral reasoning in Kohlberg's theory was never carried out.
D) other researchers, such as Carol Gilligan, argued that stage 6 was more typical of female moral reasoning and did not reflect how males reasoned.