How do multifocal gas-permeable lenses provide both distance and near vision?

How do multifocal gas-permeable lenses provide both distance and near vision?

• A. They are simply larger diameter.
• B. They block peripheral vision to focus central retina.
• C. They adjust with cycloplegic refraction.
• D. They use multiple concentric zones or a progressive refractive design to provide multiple focal powers.

Answer: (D)