Answer: d. A = 500 BCE; B = 250 BCE
Step-by-step explanation:
The term BCE means Before Common Era and it is used to describe the time period before Jesus Christ was born and CE (Common Era) referring to the years after.
With BCE the years are to be counted down as you progress. What this means is that the higher number is the earlier period and the smaller number is the later period.
BCE is then counted down till 0 and then CE takes over. With CE we count up so the earlier period is the smaller number and the larger number is the later period.
Therefore A and B have to smaller than 600 BCE to be after it and smaller than 200 CE to be before it.
Option D is therefore correct as it is lower than 600 BCE and as they are both BCE, they are earlier than 200 CE.
600 BCE ⇒ 500 BCE ⇒ 250 BCE ⇒ 200 CE