What are the​ short-run economic effects when u.s. firms substitute labor outside of the u.s. for labor inside the​ u.s.?


a. the demand curve for labor in the u.s.​ increases, and the demand curve in the foreign country will increase.


b. the demand curve for labor in the u.s.​ decreases, and the demand curve in the foreign country will increase.


c. the demand curve for labor in the u.s.​ decreases, and the demand curve in the foreign country will decrease.


d. the demand curve for labor in the u.s.​ increases, and the demand curve in the foreign country will decrease?