Asweater is on sale for 20% off the original price, x.

which statement explains why x − 0.2x and 0.8x can each find the sale price of the sweater?

a. an increase of 20% is the same as dividing by 80%.

b. an increase of 20% is the same as multiplying by 80%.

c. a decrease of 2% is the same as multiplying by 80%.

d. a decrease of 20% is the same as multiplying by 80%.