How many people were involved in the experiment giving rise to radioactivity

A．To warn people of the dangers of atomic power.
B．To describe the heroism of Louis Slotin.
C．To make a statement about what morality means.
D．To express the author's view of a scientist's duty.

A．more students cheat on exams now than in the past
B．each era has a different concept of honour
C．there are still many individuals today who have a sense of honour
D．our society no longer values a sense of honour