Which of the Following Represents the Charged Environment Inside a Neuron

Multiple Choice

Which of the following represents the charged environment inside a neuron and in the interstitial fluid that surrounds it?

A) negatively charged proteins inside; more sodium ions inside than outside; more potassium ions outside than inside
B) positively charged proteins inside; more sodium ions inside than outside; more potassium ions outside than inside
C) negatively charged proteins inside; more sodium ions outside than inside; more potassium ions inside than outside
D) positively charged proteins inside; more sodium ions outside than inside; more potassium ions inside than outside
E) negatively charged proteins inside; equal amounts of sodium and potassium ions inside and outside