Compared with high-pressure bags, low- and medium-pressure bags are generally:

Compared with high-pressure bags, low- and medium-pressure bags are generally:

• A. Larger
• B. Smaller
• C. Approximately the same size
• D. Unrelated in size

Answer: (A)

Bag size reflects the pressure it's designed to operate at: high-pressure bags are built to resist expansion, so they stay compact. Low- and medium-pressure bags, by contrast, are more compliant and can expand to hold more volume without pushing the pressure up quickly, so they’re made larger. In practice, delivering content at lower pressures requires a bigger reservoir to store enough volume, while a high-pressure bag prioritizes a smaller, sturdier shape to withstand higher forces. That’s why these lower-pressure options are generally larger than high-pressure bags.

Bag size reflects the pressure it's designed to operate at: high-pressure bags are built to resist expansion, so they stay compact. Low- and medium-pressure bags, by contrast, are more compliant and can expand to hold more volume without pushing the pressure up quickly, so they’re made larger. In practice, delivering content at lower pressures requires a bigger reservoir to store enough volume, while a high-pressure bag prioritizes a smaller, sturdier shape to withstand higher forces. That’s why these lower-pressure options are generally larger than high-pressure bags.