Consider the element shown in the diagram. In diagram,p → pressure\(p+\frac{\Delta p}{\Delta x}dx=p+\frac{\partial p}{\partial x}dx\) dx, day, dz → dimensions in x, y and z directions What is the net pressure force in x direction?

• A. \(-\frac{\partial p}{\partial x}\)
• B. \(\frac{\partial p}{\partial x}\)
• C. \(\frac{\partial p}{\partial x}dx \,dy \,dz\)
• D. \(-\frac{\partial p}{\partial x}dx \,dy \,dz\)