Question $2$

A person needs to remove a tight fitting pin of material $\backslash ($ A $\backslash )$ from a hole in a block made of material $\backslash ($ B $\backslash ).$ The person heats both the pin and the block to the same high temperature and removes the pin easily. Which statement relates the coefficient of thermal expansion of material $\backslash ($ A $\backslash )$ to that of material $\backslash ($ B $\backslash )?$

Material A has a greater coefficient of expansion than does material B$.$

Material B has a greater coefficient of expansion than does material A $.$

We need more information.

Material B has the same coefficient of expansion as does material A$.$