What Have We Learned About the Functional Organization of the Brain

What have we learned about the functional organization of the brain from fMRI studies?

A) Local regions of the brain are used for multiple functions across multiple domains, like cognition, language, sensation, emotion, and action planning.
B) Multiple behaviors can be associated with a single specific region in the brain.
C) Multiple cognitive processes can be associated with a single specific region in the brain.
D) During many behaviors and cognitive processes, all the neurons in a local region of the brain will be active at once, as represented by the color scale in an fMRI image.