If All the Individuals Had the Same Innate and Learned

If all the individuals had the same innate and learned skills and abilities, applied the same degree of effort on the job, and worked with the same amount and quality of other factors of production,

A) all labor supply curves would be horizontal.
B) all labor demand curves would be horizontal.
C) wages in different markets would differ less than they currently do.
D) the quantity of labor supplied would decrease in all markets.
E) the demand curve for capital would be upward sloping.