i just want to make sure my answers are accurate

1. Briefly describe the difference between opportunity cost and sunk cost. 2. From the article: "Most brands produce too many goods... the overproduction adds waste as unwanted merchandise ends up in landfills." Briefly explain why the costs of producing "unwanted merchandise [that] ends up in landfills" are sunk costs. 3. From the article: "Retailers... have been racing in recent years to shorten lead times to better match supply with demand." If clothing retailers are able to "match supply with demand" will this mean that the demand for the clothing they sell will equal the supply of clothing consumers are willing to buy? Briefly explain your answer. 4. From the article: "Designers Jeffrey Costello and Robert Tagliapietra...launched their Costello Tagliapietra brand in 2005 ... 'We did all the right things, but we were always treading water,' Mr. Tagliapietra said. They closed...in 2015 and a year later launched JCRT...JCRT is on track to have about $2 million in revenue this year, less than the $8 million Costello Tagliapietra had at its peak. But JCRT is more profitable... It has only two employees... compared with 15 at their earlier company.." Does a change in technology explain why JCRT is a more profitable company than was Costello Tagliapietra? Briefly explain your