Based on the base-case analysis of the firm's variable cost and the upper bounds anticipated, the worst case for variable cost per unit is $52.50.
The worst case scenario for expenses would be a situation where they are higher instead of lower.
This means that the upper bound of the variable cost will be applied to find the worst case scenario:
= Base case analysis amount x (1 + upper bound)
= 50 x (1 + 5%)
= $52.50.
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