Liquid-crystalline question

Question

For a given substance that exhibits liquid-crystalline properties, the liquid-crystalline state exists

a) at one particular temperature below the melting point of the solid

b) in a range of temperatures below the melting point of the solid

c) at one particular temperature above the melting point of the solid

d) in a range of temperatures above the melting point of the solid

e) in a range of temperatures from below the melting point to above the melting point

Answer 1

d