The price of a refrigerator is increased by 1 / 15 and then decreased by 1 / 15. Compared with the original refrigerator, the price of this refrigerator is () a, increased B, decreased C and unchanged

The price of a refrigerator is increased by 1 / 15 and then decreased by 1 / 15. Compared with the original refrigerator, the price of this refrigerator is () a, increased B, decreased C and unchanged

B