Express the shear stress tensor(τ) of a three-dimensional fluid flow element in terms of the velocity vector(v).

• A. \(\tau=\mu\left\{(\nabla \vec{v})^T\right\}+\lambda(\nabla.\vec{v})I\)
• B. \(\tau=\mu\left\{(\nabla \vec{v})\right\}+\lambda(\nabla.\vec{v})I\)
• C. \(\tau=\mu\left\{(\nabla \vec{v})^T+(\nabla.\vec{v})^T\right\}\)
• D. \(\tau=\mu\left\{(\nabla \vec{v})^T+(\nabla.\vec{v})^T\right\}+\lambda(\nabla.\vec{v})I\)