An iron rod of susceptibility 599 is subjected to a magnetising field of 1200Am−1. The permeability of the material of the rod is : (μ0 = 4π × 10− 7T mA−1)

A. 2.4π×10−5T mA−1
B. 2.4π×10−4T mA−1
C. 2.4π×10−7T mA−1
D. 8×10−5T mA−1