Fluid mosaic membranes — practice question

Which statement about the fluid mosaic model of membrane structure is right?

• AThe less unsaturated the fatty acid chains of the phospholipids, the more fluid the membrane.
• BThe more unsaturated the fatty acid chains of the phospholipids, the more fluid the membrane.
• CThe higher the temperature, the less fluid the membrane.
• DThe lower the temperature, the more fluid the membrane.