If the resistivity of a material is decreased by a factor of 4, the skin depth of an electromagnetic wave incident on it

If the resistivity of a material is decreased by a factor of 4, the sk

1.	If the resistivity of a material is decreased by a factor of 4, the skin depth of an electromagnetic wave incident on it
A.	Decreases by a factor of 2
B.	Decreases by a factor of 4
C.	Increases by a factor of 4
D.	Increases by a factor of 2
Answer» B. Decreases by a factor of 4