A bag of incense money was lost in the temple. The abbot found three young monks, A. B, and C, and asked each of them. A said, "I didn't steal it. " B said, "A stole. " C said: " I didn't steal it. "Ding, who was on the side, understood the truth and said," Only one of the three of you stole, and only one of them was right. ". who among the three of them stole incense money? ['B.', 'C.', 'Did not steal.', 'A.']