Lubricant

Substances used in preparation of mixtures which do not readily dissolve unless finely powered before aqueous vehicle is added.
A. Alum
B. Boric acid
C. Ferrous Salphate
D. citric acid
E. calcium Lactate
Choose the correct answer from the options given below:

Which of the following material can be used as glidant, lubricant as well as anti- adherent?