ECONOMICS

Detailed explanation-1: -Answer and Explanation: The correct answer is option B. Fixed costs are constant in total, and variable costs are constant per unit. Fixed cost remains fixed in total and do not change with the change in production, and the variable cost is fixed at per unit level, because for every unit variable cost is same.

Detailed explanation-2: -Any relevant information is any information that has an influence on the choice. Please keep in mind that in order for information to be useful in making decisions, it must include costs and benefits that differ between options. It must be both relevant and reliable.

Detailed explanation-3: -Relevance considers the importance of the information for your research needs. A relevant information source answers your research question. To determine relevance, the purpose and bias must be understood. In fact, all aspects of evaluation must be taken into consideration to determine relevance.

Detailed explanation-4: -Therefore, the relevance of cost is determined by its potential effect(s) on the decision.