Assertion $(A):$ $VF_5$ is stable while $VCl_5$ is not.
Reason $(R):$ Fluorine stabilizes the higher oxidation state due to its higher bond enthalpy.
The correct option among the following is

• A
  $A$ is true, $R$ is true and $R$ is the correct explanation for $A$
• B
  $A$ is true, $R$ is true but $R$ is not the correct explanation for $A$
• C
  $A$ is true but $R$ is false
• D
  $A$ is false but $R$ is true