Answer all three parts correct or do not attempt!!

Consider the following decision table where cell entries are profits.

Alternative Actions	States of Nature
	S1	S2	S3	S4
A1	90	80	-15	-40
A2	75	70	10	-20
A3	0	65	80	55
A4	-30	-10	75	110

a) Which alternative should be chosen using pessimistic criterion?

A1? A2? A3? or A4?

b) Which alternative should be chosen using optimistic criterion?

A1? A2? A3? or A4?

c) Which alternative should be chosen using equal likelihood criterion?

A1? A2? A3? or A4?