Which statement doesnt describe PERT?

	a.	This can introduce merge bias and this ignores the risks in other near-critical path(s) and merge points.
	b.	Although this helps the project team to understand variability on the project, it is still an approximation.
	c.	Approximation used in this such as applying Central Limit Theorem with fewer than 30 activities in the path.
	d.	Probability distribution does not follow normal distribution.
	e.	Probability distribution follows Normal distribution.