When considering Kohlberg's work on moral development in addition to Gilligan's

When considering Kohlberg's work on moral development in addition to Gilligan's work, which of the following is true?
a. Gilligan's work on moral reasoning emphasized justice and equality whereas Kohlberg's did not.
b. Kohlberg's original research had an equal amount of males and females as participants, therefore
his theory applies to all individuals.
c. Kohlberg's research concludes that moral reasoning differs between the sexes, with women
attaining a higher level than men.
d. Kohlberg's work in moral reasoning emphasized compassion, caring, and concern for others.