Liquid crystal question

Question

For a given substance that exhibits liquid-crystalline properties, the transition from solid to liquid-crystal state occurs ...

a) over a range of temperatures between the melting point of the solid and the boiling point of the liquid

b) at the melting point of the solid

c) over a range of temperatures that includes the melting point of the solid

d) at a well defined temperature above the melting point of the solid

e) at a well defined temperature below the melting point of the solid

Answer 1

b