If You Were to Insert a Microelectrode Through the Cell

If you were to insert a microelectrode through the cell membrane of a neuron, you would be able to demonstrate that

A) the region inside the cell membrane is more positively charged than the region outside the membrane.
B) the region inside the cell membrane is more negatively charged than the region outside the membrane.
C) there is a greater concentration of potassium ions outside the cell membrane than inside the membrane.
D) there is a greater concentration of potassium ions inside the cell membrane than outside the membrane.