The ratios of the laminary hydrodynamic boundary layer thickness to thermal boundary layer thickness of flows of two fluids P and Q on a flat plate are 
and 2 respectively. The Reynolds number based on the plate length for both the flows is 104. The Prandtl and Nusselt numbers for P are 
and 35 respectively. The Prandtl and Nuzzelt number for Q are respectively.
(a) 8 and 140 (b) 8 and 70
(c) 4 and 70 (d) 4 and 35