In journal bearing design, the factor $\frac{ZN}{P}$ is called the ‘Bearing characteristic number’ where Z= absolute viscosity of the lubricant, N = Speed of journal in rpm and P = Bearing pressure on the projected bearing area. The value of $\frac{ZN}{P}$ corresponding to the Minimum amount of friction is called the bearing modulus ‘K’. For hydrodynamic lubrication of the bearing, $\frac{ZN}{P}$ should be
(a) Larger than K (b) Smaller than K
(c) Equal to K (d) Equl to zero.