Which set of causes and symptoms correctly describes hypokalemia?

Causes: excessive potassium supplements or salt substitutes; Symptoms: increased muscle strength and hyperactive reflexes with no cardiac effects.

Causes: vomiting, diarrhea, diuretics; Symptoms: muscle weakness, fatigue, possibly arrhythmias.

Causes: high dietary potassium from fruits and vegetables only; Symptoms: profuse sweating and high blood pressure with persistent headaches.

Causes: dehydration exclusively from lack of water intake; Symptoms: neurological hyperactivity and severe agitation in all cases.