In a $$\triangle$$ ABC, D, E and F are the mid-points of side BC, CA and AB respectively. If BC= 25.6 cm. CA= 18.8 cm and AB = 20.4 cm, what is the perimeter (in cm) of the $$\triangle$$ DEF?

A

36.8

B

30.6

C

32.4

D

34.4