How are the indicator diagrams drawn for the ship?

• A. By providing the ship‚Äö√Ñ√∂‚àö√ë‚àö¬•s mass
• B. By providing the ship‚Äö√Ñ√∂‚àö√ë‚àö¬•s volume
• C. By matching ships sea trial diagrams
• D. By differentiating the diagrams