Which two statements about the Ethernet media are true?

A.	A twisted-pair cable system has each pair of wires twisted together to reduce electromagnetic interference.
B.	Compared to multimode fiber, the single-mode fiber is designed for shorter distances with higher cost.
C.	40 Gigabit Ethernet twinax cables deploy Enhanced Quad Small Form Factor Pluggable (QSFP+) connectors.
D.	The twinax cables can be found in either a shielded twisted-pair or an unshielded twisted-pair variation.