What is the concentration in mole /tion of solute of a \(1.25 \, M\) aqueous solution of potassium nitrate, \( KNO₃ \)? The density of the solution is \(1.19 \, g/ml\).
a. \(0.035\)
b. \(0.045\)
c. \(0.055\)
d. \(0.065\)