Group the Objects into Classes So That All the Elements

Group the objects into classes so that all the elements within each class are topologically equivalent and no elements from different classes are topologically equivalent.
A. a glass
B. a bowling ball
C. a sheet of typing paper
D. a ruler
E. a sphere

A) A, B, C, D and E
B) A, B, C, and E; D
C) A, B, C, and D; E
D) A; B, C, D and E
E) A, C and E; B; D