Ahistorian is examining the concept of monarchy, or government ruled by a king. which question might the historian ask if he were organizing his study by region?

The right answer for the question that is being asked and shown above is that: "B. How did European kings justify their power differently from Asian kings?"

Here are the following choices:
A.How have kings in different eras acquired the wealth necessary to support themselves? 
B.How did European kings justify their power differently from Asian kings?
C.What is the philosophical relationship between a king and his subjects?
D. Which king today has ruled for the longest time without interruption?