What Is the Difference Between an RJ-45 Port and an RJ-11

Multiple Choice

What is the difference between an RJ-45 port and an RJ-11 port?

A) RJ-45 has 8 conductors; RJ-11 has 4 conductors.
B) RJ-45 supports fiber connections; RJ-11 supports copper connections.
C) The RJ-45 jack looks like a phone jack; the RJ-11 jack looks like an RCA jack.
D) RJ-11 is found on a modem; RJ-45 is found on a sound card.