
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In a city, there are 72 small supermarkets, 24 medium supermarkets, and 12 large supermarkets. A stratified sampling method is used to select 9 supermarkets for investigating the quality of the goods sold.

(I) Determine the number of small, medium, and large supermarkets that should be selected respectively;  
(II) If 3 of the 9 selected supermarkets are randomly chosen for further follow-up analysis, and the random variable $X$ represents the number of small supermarkets selected, find the distribution of the random variable $X$ and its expected value $E(X)$.

Present the answer in LaTex format: \boxed{Your answer}
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