Choose the correct answer for the given question from the options:
 
A class observes the following:

a. Substance X spreads quickly throughout the available space.
b. Substance Y occupies only a fixed volume but takes the shape of its container.
c. Substance Z cannot flow and has a definite shape.
 
i. Identify X, Y, and Z
Substance X, Y and Z are
 
ii. Arrange X, Y, Z in increasing order of forces of attraction.