The correct option is A China
Confucius born in 551 BC was a politician, musician and philosopher who wandered throughout China as government employee and later as Chou dynasty political adviser. The philosophy and teachings of Confucius came to be known as Confucianism whose goal was learning to be human. Lao Tzu translated as 'Old Master' from 604 BC is believed to be author of Taoism. Before leaving civilization he wrote a book Tao Te Ching, which became the important text of Taoism. Taoist believe everything is one despite all appearances. In 440 CE China adopted Taoism as state religion.