Because of the dynamics of the workforce, for example, whether workers become discouraged when there are changes in the economy:

	a.	the unemployment rate is not necessarily an accurate gauge of the labor market
	b.	the unemployment rate is a precise gauge of the labor market
	c.	one should only consider the employment population ratio rather than the unemployment rate
	d.	at times the labor demand curve is upward sloping
	e.	None of these answers are correct.