Identify the Incorrect Pairing of a Macronutrient with Its Major

Identify the incorrect pairing of a macronutrient with its major function(s) .

A) Potassium (K) : water balance and blood clotting
B) Sodium (Na) : water balance and nerve and muscle action
C) Magnesium (Mg) : required by many enzymes
D) Phosphorus (P) : component of nucleic acids, ATP, and phospholipids
E) Calcium (Ca) : nerve and muscle action, and component of bones and teeth