Internal sizing agents are generally _________ materials. The polar portion attaches to the fiber or fines directly through a covalent bond or indirectly through a caustic element such as alum.

Internal sizing agents are generally _________ materials. The polar po

1.	Internal sizing agents are generally _________ materials. The polar portion attaches to the fiber or fines directly through a covalent bond or indirectly through a caustic element such as alum.
A.	tAmphoteric
B.	tAmphitaric
C.	tNon polar
D.	tPolar
Answer» C. tNon polar