$///////////4\mathrm{.}4$ Query $4.$ For each Bar $-$ Find the most expensive beer $($highest price$)$ or beers $($If more than one beer is of the highest price$)--$ You Provide It $($Submission $5)$

Actions

Schema $($i$.$e$.$ columns$)$ to be returned $-($bar$,$ beer, price$).$

Please use the relation operator functions to get the results. DO NOT use pythons aggregate functions to achieve the desired output.

Do not use Python in$-$built dictionary$/$list$.$ Only previous relational operator functions are allowed.

Use Select function with price $>=0$ for removing NaN values

Columns in result$/$output can be displayed in any order.

Please use different set of operators for two variants.

# Variant A: The first query variant for answering this query.

# Write your query here.

# Variant B: The second query variant for answering this query.

# Write your query here.