Which Example Best Illustrates the Concept of "Derived Demand

Which example best illustrates the concept of "derived demand"

A) An increase in the wages of autoworkers will lead to an increase in the demand for robots in automobile factories.
B) An automobile producer's decision to supply more cars will lead to an increase in the demand for automobile production workers.
C) An automobile producer's decision to supply more minivans results from a decrease in the demand for station wagons.
D) A decrease in the wages of autoworkers will lead to an increase in the demand for robots in automobile factories.