Which of the following is an incorrect statement about $PCl_5$?

• A
  $P-Cl$ bond length: $\text{axial} > \text{equatorial}$.
• B
  $PCl_5$ is an $sp^3d$ hybridized molecule.
• C
  Axial $P-Cl$ bonds are weaker than equatorial $P-Cl$ bonds.
• D
  $PCl_5$ is a non-reactive molecule.