Costs that are charged against revenue irrespective of the volume of production achieved are known as:

A. Semi-variable costs
B. Period costs
C. Direct costs
D. Marginal costs
E. Conversion costs

B. Period costs

Explanation:
The correct answer is option B, “Period costs.”
Explanation: Period costs are expenses that are not tied to production levels and are expensed in the period incurred. They include costs such as administrative expenses, rents, and salaries.