If the Firms in Perfectly Competitive Industries Each Have a Production

Multiple Choice

If the firms in perfectly competitive industries each have a production function given by $q = k ^ { 1 / 4 } l ^ { 3 / 4 }$ and the price elasticity of demand for the industry's output is -1,the wage elasticity of demand for labor by the industry will be

A) 0.
B) $- \infty$
C) -1.
D) -2.