A magnet of length 14 cm and magnetic moment `p_m` is broken into two parts of length 6 cm and 8 cm. They are put at right angle to each other with the opposite poles together. The magnetic moment of the combination is :

Options

A. `p_m/10`
B. `p_m`
C. `1.4 p_m`
D. `2.8 p_m`.