Case

${\left(R{e}_{\tau }\right)}_s$

${\left(R{e}_{\tau }\right)}_p$

$N{u}_s$

$N{u}_p$

A

200

200

6.8

6.8

B

150

235

5.7

5.8

C

138

235

4.3

4.6

D

137

219

3.2

3.4