The data from a consolidated$-$undrained $($CU$)$ triaxial compression test performed on a normally consolidated clay sample is as follows:

Cell pressure at failure $=20$

Deviator stress at failure $=36$

Porewater pressure at failure $=6$

If you are to determine the effective stress strength parameters $($i$.$e$.,$ effective friction angle and effective cohesion$),$ which Mohr circle in the figure below is correctly drawn to do so$?$

A$.$ Circle A

B$.$ Circle B

C$.$ Circle $C$

D$.$ Circle D