Correct Answer: (b) Both (A) and (B) are true.
Note: Many religious sects came into existence across the middle Ganga valley of northern India during sixth century B.C., which witnessed an intellectual environment due to the emergence of many new faiths and beliefs. The hermits following different faiths started preaching their thoughts and disclaiming each other's philosophies. It should be noted during that time, such type of intellectual movements was also emerged in other countries of the world. Confucius, Zarathustra and Pythagoras were the people who challenged the traditional assumption in China, Iran and Greece respectively. Vedic religion became complicated. There was more focus on purity of Shlokas and Yajnas. As a result, the importance of priests increased enormously. It began to spend much money on Yajnas and also motivated animal killings.