If the dipole moment of a water drop is 4 X 10-30 m and radius is 1 mm, what is the polarization of the drop?

If the dipole moment of a water drop is 4 X 10-30 m and radius is 1 mm

1.	If the dipole moment of a water drop is 4 X 10^-30 m and radius is 1 mm, what is the polarization of the drop?
A.	5.6 X 10<sup>-13</sup> m<sup>-2</sup>
B.	7.4 X 10<sup>-13</sup> m<sup>-2</sup>
C.	8.4 X 10<sup>-13</sup> m<sup>-2</sup>
D.	9.4 X 10<sup>-13</sup> m<sup>-2</sup>
Answer» B. 7.4 X 10<sup>-13</sup> m<sup>-2</sup>