The boundary layer thickness is taken to be at a distance from the plate surface to a point at which the velocity is given by

The boundary layer thickness is taken to be at a distance from the pla

1.	The boundary layer thickness is taken to be at a distance from the plate surface to a point at which the velocity is given by
A.	u = 0.99 U <sub>INFINITY</sub>
B.	u = 0.75 U <sub>INFINITY</sub>
C.	u = 0.50 U <sub>INFINITY</sub>
D.	u = 0.33 U <sub>INFINITY</sub>
Answer» B. u = 0.75 U <sub>INFINITY</sub>