Why have many developing countries failed to benefit from the spread of free trade around the world? O A. Developed countries have stopped giving large amounts of foreign aid at the same time that trade barriers have come down.

O B. Developing countries don't possess the natural resources needed to fuel industrial production.

O C. Developing countries owe so much debt that their governments aren't able to invest in infrastructure improvement.

O D. Developed countries continue to maintain high tariffs on the agricultural goods that developing countries export in large numbers.​

Acompany manufactures x units of product a and y units of product b, on two machines, i and ii. it has been determined that the company will realize a profit of $3 on each unit of product a and $4 on each unit of product b. to manufacture a unit of product a requires 7 min on machine i and 5 min on machine ii. to manufacture a unit of product b requires 8 min on mchine i and 5 min on machine ii. there are 175 min available on machine i and 125 min available on machine ii in each work shift. how many units of a product should be produced in each shift to maximize the company's profit p?