Which Statement Regarding the Ions in Intracellular and Extracellular Fluids

Which statement regarding the ions in intracellular and extracellular fluids in a standard animal cell is true?

A) Na⁺ leaks into the cell rapidly because its electrochemical gradient is large.
B) K⁺ leaks out of the cell slowly because the electrochemical gradient is small.
C) Cl^- leaks into the cell rapidly because its electrochemical gradient is large.
D) Negatively charged proteins leak out of the cell slowly because their electrochemical gradient is small.