There are four samples on a laboratory table. Sample A is a hard crystalline solid, which does not break easily.
Sample B is a solid that readily dissolves in water.
Sample C is a liquid that evaporates at room temperature.
Sample D is a colored liquid that conducts electricity.

Based on this information, which sample is most likely to be a covalent compound?

A.
sample A
B.
sample B
C.
sample C
D.
sample D