How did listening to a subject talk about the dilemma allow Kohlberg to determine a person’s level of moral reasoning?

A
Kohlberg could determine if they were more concerned with looking good than doing good.
B
Kohlberg could understand how people decided what was the right thing to do.
C
Kohlberg could understand if being truthful in their reply was important or not.
D
Kohlberg could decide if they picked the right answer and give them a score.