Researchers Have Found That the AMPA Receptors on Bergmann Glia

Researchers have found that the AMPA receptors on Bergmann glia are important for regulating fine motor coordination in mice. Which observation would support this idea?

A) Selectively blocking glutamate transmission between granule cells and Purkinje cells affects motor behavior.
B) Selectively knocking out AMPA receptors on Bergmann glia does not affect general motor behavior but disrupts challenging motor behavior.
C) Glutamate agonists cause mice to run faster.
D) All of the above