How might the policy changes in parts a through e affect the wage gap between low-skill and high-skill workers in the United States?

a. Increased spending on computers in public schools.

b. Restrictions on the number of foreign temporary agricultural workers allowed to enter the United States.

c. An increase in the number of public colleges.

d. Tax credits in Central America for US firms.

e. Subsidies paid to business to introduce robots into the production process.