Outside a spherically symmetric charged object, the field magnitude varies as which power of distance?

1. The distance dependence of the field follows a specific power law. 2. The electric field outside a spherically symmetric charged object is radial. 3. Its magnitude varies as the inverse square of the radial distance. 4. That distance is measured from the centre of the object. _Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 18 'Electric Charge and Electric Field', sections 18.1-18.8_