During Cell Injury Caused by Hypoxia, Why Do Sodium and Water

During cell injury caused by hypoxia, why do sodium and water move into the cell?

A) Because potassium moves out of the cell, and potassium and sodium are inversely related
B) Because the pump that transports sodium out of the cell cannot function because of a decrease in ATP
C) Because the osmotic pressure is increased, which pulls additional sodium across the cell membrane
D) Because oxygen is not available to bind with sodium to maintain it outside of the cell