Identify the true statements about a level production strategy. $($Check all that apply.$)$

Multiple select question.

A level production strategy requires overtime, changes in the workforce level, and subcontracting.

A level production strategy requires the least overall investment in plant and equipment.

A firm is more likely to use a level strategy when its processes require highly skilled workers that are hard to find.

A level production strategy is used when the costs of ramping production up and down are high and inventory costs are relatively low.