The infant-industry argument is the only perfectly valid argument for protection

Slope is calculated as rise / run

Indicate whether the statement is true or false

A common property is

a. both nonrivalrous and nonexcludable. b. nonrivalrous, but not nonexcludable. c. nonexcludable, but not nonrivalrous. d. either nonrivalrous or nonexcludable, but not both.