So if you think of a pyramid, the highest rank is on top, the order goes
1. Brahmins (highest rank or most respected) - priests, and the academic class
2. Kshatriyas - Rulers, administrators, and warriors
3. Vaishyas - artists, tradesmen, farmers, merchants
4. Shudras - commoners, peasants, servants
5. Dalits/outcastes/untouchables - street sweepers, latrine cleaners
Hope this helped a bit!
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Ukraine, 1986, the worst nuclear accident in history happened in Chernobyl. A nuclear power plant exploded after the manager didn't do use proper safety precautions on a test. The fire from the explosion wouldn't stop, and the first responding firefighters died of acute radiation poisoning. The town was evacuated, as it is today. Today, some people consider the area around Chernobyl a natural reserve, as wildlife is growing it the radioactive area.
The answer is D, both are 12
