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Answer (B) is correct . The word deterministic is used to characterize processes that are not probabilistic. Such an approach uses the most likely value. In this case, sales of desserts would most likely be 300,000 units. At $1.80 each, total revenue would be $540,000.

Answer (A) is incorrect because Multiplying the volume times the probability times $1.80 for each possibility and then totaling results in $549,000. This is the total revenue.
Answer (C) is incorrect because Multiplying 300,000 units times .40 probability times $1.80 results in $216,000. The probability should not be used in the formula. It should be used to select the most likely possibility.
Answer (D) is incorrect because The revenue would be $540,000.