A cake shop collected the following information about two of their suppliers of baking flour, Wheaty and Grainy from last year.

	Wheaty	Grainy
I. Return rejected flour to supplier	5 returns	9 returns
II. Receive late deliveries	7 late deliveries	2 late deliveries
III. SPI	0.68	1.17

Which of the above criteria supports the selection of Wheaty as the preferred supplier?

a.I only

b.III only

c.II and III only

d.I and III only

e.I, II and III