A manufacturing firm is trying to optimize its production line for a new product. They need to select two key settings: 'Machine Speed' (low, medium, high) and 'Material Feed Rate' (slow, normal, fast). A higher machine speed increases throughput but also defect rate; a faster feed rate provides more units but can strain the machine. The goal is to maximize total good units produced per hour, considering defect rates. If test runs show that a 'medium' machine speed combined with a 'normal' feed rate yields a balanced output with acceptable defect levels, and increasing either setting alone significantly raises defects without proportional throughput gains, what is the optimal combination?
✓ Correct Answer: Option B
The scenario explicitly states that 'medium' speed and 'normal' feed rate yield balanced output and acceptable defects, and increasing either alone leads to disproportionate defect increases, implying this combination is optimal for 'good units'.