Consider the following stress state imposed on a material:

90      50         0

𝜎 = [50     −20       0 MPa.

0         0        14]

If the material responds elastically with a volumetric strain 𝛥 = 3.5 × 10⁻⁴, what is its bulk modulus?

(A) 150 GPa                (B) 350 GPa              

(C) 200 GPa                             (D) 400 GPa