Pavan separates some materials into two groups and notes their properties. These properties are given in the table below:
Group $1$ Group $2$
They cannot be beaten into sheets. They can be beaten into sheets.
When one end is in contact with a hot object,the other end does not get hot quickly. When one end is in contact with a hot object,the other end gets hot quickly.
They cannot be drawn into thin wires. They can be drawn into thin wires.

Which of the following statements cannot be false?

  • A
    Materials in Group $1$ are generally not lustrous and hard.
  • B
    Materials in Group $1$ generally have lower density than materials in Group $2$.
  • C
    Materials in Group $2$ can be used to make bells.
  • D
    Materials in Group $2$ can be used to make materials that are insulators of electricity.

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