At a grocery store, blueberries come packaged in 8-ounce containers for $2.80. at a farmer's market, blueberries cost $4.20 for 14 ounces. there are 16 ounces in one pound. which statement accurately compares the cost of blueberries?

blueberries are $0.23 per pound more expensive at the farmer’s market.
blueberries are $0.50 per pound less expensive at the farmer’s market.
blueberries are $0.80 per pound less expensive at the farmer’s market.
blueberries are $1.40 per pound more expensive at the farmer’s market.