Which one of the following costs is classified as a period cost? $($CIA adapted$)$

Multiple Choice

The wages paid to workers for reworking defective products that failed the quality inspection upon completion.

The wages of a worker paid for idle time resulting from a machine breakdown in the molding department.

The wages of the workers on the shipping docks who load completed products onto outgoing trucks.

The payments for employee $($fringe$)$ benefits paid on behalf of the workers in the manufacturing plant.