When only two hydrogen atoms are attached to the nitrogen of an amine, it is classified as a ________amine.

When only two hydrogen atoms are attached to the nitrogen of an amine,

1.	When only two hydrogen atoms are attached to the nitrogen of an amine, it is classified as a ________ amine.
A.	primary
B.	secondary
C.	aliphatic
D.	aromatic
Answer» B. secondary