Which of the following increases in labor demand is due to a change in the price of a related resource?
a) Snowboarding increases in popularity, thus increasing the demand for the workers who make snowboards.
b) A technological change increases output per worker in the computer industry, thus increasing the demand for computer workers.
c) Software sales rise, thus increasing the demand for software developers.
d) A decrease in the price of wood decreases the cost of furniture, thus increasing the demand for furniture workers.
