Hypokalemia (<3

Hypokalemia (<3.0 mmol/L) is considered a serious health threat because:

A) the heart rate increases,leading to weakness,difficulty in breathing,and eventual cardiac arrest.
B) the heart rate slows because of the lowered excitability of cardiac smooth muscle,leading to possible cardiac standstill.
C) the body gains water through the kidney reabsorption,leading to severe edema.
D) arterial pH will decrease (increased H⁺ concentration) ,leading to metabolic acidosis.