Which of the following is the correct representation of the darcy’s law?$

• A. (-k/¬¨¬®¬¨¬µ)(dp/dz)
• B. (-k¬¨¬®¬¨¬µ)(dp/dz)
• C. (k/¬¨¬®¬¨¬µ)(dp/dz)
• D. (k¬¨¬®¬¨¬µ)(dp/dz)