To stain the B/M other than Wright stain which stain usually used.. stain for iron

To stain the B/M other than Wright stain which stain usually used?
a. PAS stain
b. Sudan black stain
c. stain for iron.

(c) Bone marrow films should be stained with  an iron stain e.g. Perl's, Prussian blue, as a routine to demonstrate iron (Dacie).