Mass by mass percentage of a solution =
A) \(\cfrac{mass \,of \,solute}{mass \,of \,solution}\) × 100
B) \(\cfrac{mass \,of \,solute}{mass \,of \,solvent}\)× 100
C) \(\cfrac{mass \,of \,solution}{mass \,of \,solute}\)× 100
D) \(\cfrac{mass \,of \,solvent}{mass \,of \,solute}\) x 100