Assertion: The permeability of a ferromagnetic material is independent of the magnetic field.
Reason: Permeability of a material is a constant quantity.
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion
C. f assertion is true but reason is false.
D. If the assertion and r eason both are false