According to this article，which statement is true？( ) A.The demand of labor is more than the supply of laborB.The demand of labor is less than the supply of laborC.The demand of labor is equal to the supply of laborD.The author is not clear about the rel

According to this article，which statement is true？( )

A.The demand of labor is more than the supply of labor
B.The demand of labor is less than the supply of labor
C.The demand of labor is equal to the supply of labor
D.The author is not clear about the relation between the demand of labor and the supply of labor