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 p

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.	Amphoteric
B.	Amphitaric
C.	Non polar
D.	Polar
Answer» C. Non polar