The original telephone network, which is referred to as the plain old telephone system (POTS), was an ________ system.

The original telephone network, which is referred to as the plain old

1.	The original telephone network, which is referred to as the plain old telephone system (POTS), was an ________ system.
A.	digital
B.	analog
C.	digital as well as analog
D.	none of the above
Answer» C. digital as well as analog