Which of the Following Is True of Illegal Immigrants

Which of the following is true of illegal immigrants?

A) They help raise the unemployment rate of the United States.
B) They take away jobs from Americans.
C) They do not affect the equilibrium wage of the U.S.unskilled labor market.
D) They help some firms lower operating costs,earn more profit,and produce more.
E) They reduce the supply of unskilled labor in the United States.