The major difference between DMT and CAP is:

A.
CAP uses a single center frequency; DMT is multiple-carrier.

B.
DMT is single-carrier; CAP is multiple-carrier.

C.
CAP is used in IDSL; DMT is used in ADSL.

D.
DMT is used in VDSL; CAP is used in ADSL.

E.
CAP is used in ADSL, DMT is used in SDSL.