Question on decision theory ;

A hawker buys a unit of her merchandise at $ 100 and sells it at $ 200 during the day and $ 120 on the following day. The distribution of demand and respective probabilities based on past data are as shown below:

Demand	10	15	20	25	30
Probability	0.20	0.25	0.30	0.15	0.10

Generate the following a conditional pay-off table and determine her optimal strategy based on the following criteria: i) Maximax criterion ii) Maximin criterion iii) Laplace criterion iv) Expected monetary value