Which Is an Example of a Change in the Price

Which is an example of a change in the price of another resource that increases labor demand?

A) Software sales rise,thus increasing the demand for software developers.
B) Snowboarding increases in popularity,thus increasing the demand for the workers who make snowboards.
C) A decrease in the price of wood decreases the cost of furniture,thus increasing the demand for furniture workers.
D) A technological change increases output per worker in the computer industry,thus increasing the demand for computer workers.