Which liquid has the highest viscosity? water acetone oil salt water

Answer is: oil has the highest viscosity.
The viscosity of a fluid is a measure of its resistance to gradual deformation by tensile stress and shear stress.
The dynamic viscosity of water is 0,890 cP (centipoise) at about 25 °C.
The dynamic viscosity of acetone is 0,306 cP at about 25 °C.
The dynamic viscosity of olive oil for example is 81 cP at about 25 °C.

True, the standard unit for volume is liters which can be represented by either a lower case "l" or a capital "l"