[单选题]
On a cold day, a piece of metal feels much colder to ko4i490ja eba8cpvh9xh.( d.h lth :o the touch ths47gj,g)l-z2pl 6ienc c ax)dan a piece of wood. This is dueps-ln7g))2z ecxd4 cgl6,aj i to the difference in which one of the following physical property?
A. density
B. specific heat
C. latent heat
D. thermal conductivity