The inverted-U theory suggests that R&D expenditures as a percentage of sales __________ with industry concentration after

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The inverted-U theory suggests that R&D expenditures as a percentage of sales __________ with industry concentration after the four-firm concentration ratio exceeds about 50 percent.

a. Rise.

b. Fall.

c. Fluctuate.

d. Flat-line. 

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Microeconomics Principles, Problems and Policies

ISBN: 978-1259450242

20th edition

Authors: Campbell R. McConnell, Stanley L. Brue, Sean Masaki Flynn

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