The Searchlight Metaphor of Attention Is Problematic in What Way

The searchlight metaphor of attention is problematic in what way?

A) Attention can be divided across spatial locations, unlike a searchlight.
B) Attention can be dependent on an object, not a location.
C) Attention cannot be turned off, like a searchlight can.
D) Attention is not equally distributed across a location, like a searchlight suggests.