Consider a laundry service that has 4 steps to its process.

• Step 1 is Washing, Step 2 Drying, Step 3 Ironing, and Step 4 Packaging.
• Step 1 Washing is a batch operation, with a batch size of 40 pieces of clothing, variable time of 15 seconds per piece and a fixed time of 20 minutes. There is one washing machine.
• Step 2 Drying is also a batch operation, with a batch size of 40 pieces of clothing, variable time of 20 seconds per piece, and a fixed time of 40 minutes. There is one drying machine.
• Step 3 is a manual operation where a team of 2 workers iron the clothes; each worker takes on average 5 minutes to iron a piece of clothing.
• Step 4 is again a manual operation, where only one worker packages the clothes in an average of 2 minutes per piece; only 50% of the clothes need packaging.

In any demand scenario, the step with the lowest utilization will be:

Group of answer choices

Washing

Packaging

Ironing

All steps have the same capacity

Drying