Which combination(s) of alkyl bromide and carbonyl compound can be used to prepare the following product by addition of the Grignard reagent derived from the alkyl bromide to the carbonyl compound? 
Definitions:
Economic Loss
A situation where the costs of producing a good or service exceed the revenue gained from selling it, resulting in financial loss.
Economic Loss
A situation where the total costs of a business or activity exceed the total revenues, indicating a negative financial performance.
Average Variable Cost
Average variable cost is the cost that varies with the level of output, divided by the quantity of output produced, essentially the variable cost per unit of output.
Average Total Cost
The total cost divided by the number of units produced, calculating the cost on a per-unit basis.
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