How does the cis conformation of double bonds in unsaturated fatty acids affect their physical properties?

• A. It has no effect on the physical properties of the fatty acids.
• B. It creates kinks in the chain, preventing tight packing and lowering the melting point.
• C. It creates a linear structure, increasing the melting point.
• D. It allows for tight packing, increasing the melting point.

Answer: (B)