Which two characteristics of plenum cable are true? (Choose two.)
A. It is more fire-resistant than nonplenum cable.
B. It can be installed above a drop-down ceiling without additional safety precautions.
C. It is less fire-resistant than nonplenum cable.
D. When it burns, it may release more toxins than nonplenum cable.
E. It requires additional safety precautions when installed above a drop-down ceiling.