Which of These Statements Would Be True of the Iron

Which of these statements would be true of the Iron Age?

A) Though iron brought advancements in many areas, steel truly became the "key metal of history."
B) Iron contributed to both agriculture and warfare.
C) The Iron Age apparently originated in modern-day India.
D) Iron was somewhat less prone to shattering than copper, but one still had to exercise care in its use.
E) While people quickly learned to fashion iron cooking utensils that proved their mettle in the kitchen, it soon became apparent that developing farm implements would be much more difficult.