The accompanying graph shows the demand and supply of workers in a given market. The curve S_(native) represents the supply of native workers in the market and S_{(native + immigrant)} represents the supply of workers in the market after immigration. As a result of immigration, the wages of native workers_________, implying that native and immigrant  workers are _________ in this market.

a. Rose; complements

b. Fell; complements

c. Rose; substitutes

d. Fell; substitutes