The cutting speeds of four types of tools are being compared in an experiment. Five materials of varying degrees of hardness are to be used as experimental blocks. The data pertaining to measurements of cutting time in seconds appear below.

	Treatment 1	Treatment 2	Treatment 3	Treatment 4
Block 1	12	20	13	11
Block 2	2	14	7	5
Block 3	8	17	13	10
Block 4	1	12	8	3
Block 5	7	17	14	6

If we conduct a ANOVA table as follows.

Source	SS	df	MS	F
Treatment				(I)
Block				(II)
Error			(III)
Total

Which of the following is correct?

Choose one

a. I is 23

b. I is 23, II is 51.7, and III is 1 are all correct

c. I is 23,II is 51.7,and III is 1 are all wrong

d. III is 1

e. II is 51.7