What Is an Obvious Physical Difference Between Saturated and Unsaturated

What is an obvious physical difference between saturated and unsaturated fats?

A) Saturated fats are usually solids while unsaturated fats are usually liquids.
B) Saturated fats are soluble in water while unsaturated are not.
C) Unsaturated fats are soluble in water while unsaturated fats are not.
D) Saturated fats burn cleaner than unsaturated fats.
E) none of the above