Which Statement(s) Below Were Used to Confirm That the Present

Which statement(s) below were used to confirm that the present is the "best of times" for humankind as a collective?

A) Humans are now taller and heavier than at any point in their known history
B) Humans have access to more technology
C) Humans are less likely to die from violence
D) All of the above
E) None of the above