A Material Has a Coefficient of Volume Expansion of 60 $\degree$

Multiple Choice

A material has a coefficient of volume expansion of 60 x 10^-6/ $\degree$ C.What is its area coefficient of expansion?

A) 120 x 10^-6/ $\degree$ C
B) 40 x 10^-6/ $\degree$ C
C) 20 x 10^-6/ $\degree$ C
D) 180 x 10^-6/ $\degree$ C