Which statement is true about batch size?

The SAFe Workbook emphasizes that:

“Large batch sizes increase variability… Small batches go through the system faster with lower variability.”

The workbook includes exercises demonstrating that smaller batch sizes reduce cycle time and increase predictability, while large batches slow flow and introduce delays.

Source: 01 Workbook SA (6.0).pdf, Pages 2-54 to 2-56