Which is more serious.. Potassium 1.5 mmol/l

Which is more serious?
a. Glucose 15mmol/l
b. pH 7.25 acidosis.
c. Potassium 1.5 mmol/l
d. Sodium 150 mmol/l

(c) Critical K+ values are <2 .5="" or=""> 6.5 mEq/L
Critical glucose <40mg or="">450mg (2.2 & 25mmol respectively),
critical pH <7 .2="" or="">2.6
critical Na+ <120 or=""> 160mEq/L