## Ratio of perimeters of triangles?

AD, BE and CF are the perpendiculars from the angular points of a triangle ABC upon the opposite sides. The perimeters of the triangle DEF and triangle ABC are in the ratio:

A)2r/R
B)r/2R
C) r/R
D) r/3R

r - inradius , R - cirumradius
More than one options may be correct.