Which of the Following Correctly Explains the Reason for the Decline

Multiple Choice

Which of the following correctly explains the reason for the decline in union membership in the U.S.post 1970s?

A) The implementation of minimum wage laws that force employers to compensate low-skilled workers more.
B) The fall in elasticity of demand for the products of certain industries,leading to an increase in the elasticity of the labor input.
C) The irrelevance of union membership in technology sectors where demand for workers outstrips supply.
D) The increase in labor supply due to a large number of baby boomers entering the workforce.