If the composition of the solid solutions dependence is linear then which of the following law is obeyed?

• A. Mendeleev‚Äö√Ñ√∂‚àö√ë‚àö¬•s law
• B. Stock Barger‚Äö√Ñ√∂‚àö√ë‚àö¬•s law
• C. Bridgeman‚Äö√Ñ√∂‚àö√ë‚àö¬•s law
• D. Vegard‚Äö√Ñ√∂‚àö√ë‚àö¬•s law