Which of the Following Statements Most Accurately Describes the Impact

Which of the following statements most accurately describes the impact of the Indo-Europeans on the ancient civilizations of the Middle East?

A) They rapidly adapted to Mesopotamian culture and so had minimal impact.
B) They came in successive waves, disrupted the civilizations of Egypt and Mesopotamia, and introduced the use of iron
C) Although the Indo-European invasions had a temporary impact, the ancient civilizations soon recovered
D) The Indo-European impact was limited to Asia Minor and the Greek mainland