The demand and supply of labour in an industry are given by: ND = 18 - 4w NS = 2w - 6 Where ND is the number of workers demanded by employers in the industry, NS is the supply of workers to the industry and w is the real wage in dollars per hour. Suppose that the current real wage in this industry is $5 per hour. Given this information and holding everything else constant, which of the following statements is true? a. There are more workers willing to work at the current wage than there are jobs for them The current wage is the wage that would prevail in a competitive labour market without frictions. c. None of the other answers are correct. d. There is a shortage of workers in this industry (that is the demand for workers is greater than the supply)