Which type of compound is represented in the model and why? Select all that apply.

A. This model is not a metallic compound because the electrons are being transferred between different ions in the crystal structure.

B. This model is an ionic compound because the rigid formation is an example of a crystal lattice.

C. This model is a metallic compound because it consists of free-moving electrons in a crystal formation.

D. This model is not an ionic compound because the electrons are not being transferred between positive and negative ions; instead, only positive ions are present.