There seems to be some basis for concluding that genetic differences in intelligence exist between blacks and whites

Businesses may reduce their investment spending following expansionary fiscal policy because:

A. as the economy's growth rate increases, profits rise without the need for new investments. B. profits fall as expansionary fiscal policy slows the economy. C. increased government spending will drive up interest rates. D. the government will take advantage of all the good investment opportunities.

Suppose the market for good X has a four-firm concentration ratio of 0.70. Having worked for the four largest firms in the industry, you know the sales for these four firms are given by $2,000,000, $2,250,000, $2,500,000, and $2,750,000. Based on this information, we know that sales for the remaining firms in the industry are:

A. $5,505,000. B. $6,875,000. C. $4,071,430. D. $9,433,320.