If one firm has 80 percent of industry sales, while the remaining four firms share the other 20 percent of sales, then we can conclude that this is a(n)

Horizontal merger occurs when

A) two firms merge where one had sold its output to the other as an input. B) the merger moves the combined firm onto the horizontal portion of its long-run average cost curve. C) two firms merge where each is about the same size. D) two firms producing a similar product merge.

Dan is the owner of a price-taking company that manufactures sporting goods. One particular facility Dan owns produces baseball bats and baseball gloves. His cost function for baseball bats is CB(QB, QG) = 100QB + QB2 + QBQG and the marginal cost is MCB = 100 + 2QB + QG, where QB is the output level for bats and QG is the output level for gloves. Dan's cost function for baseball gloves is CG(QB, QG) = 50QG + QG2 + QGQB, and the marginal cost is MCG = 50 + 2QG + QB. The price of a baseball bat is $240 and the price of a baseball glove is $150. How would the profit-maximizing sales quantities for bats and gloves change if the price of bats was $270?

A. The quantities of bats and gloves will remain unchanged. B. The quantity of gloves will increase while the quantity of bats will decrease. C. The quantity of bats will increase while the quantity of gloves will decrease. D. The quantities of bats and gloves will both increase.