Which of the following would be the impedance of an 8 ohm and a 4 ohm speaker that are wired in parallel?

Which of the following would be the impedance of an 8 ohm and a 4 ohm speaker that are wired in parallel?

A.
2.66 ohms

B.
Less than 1 ohm

C.
4 ohms

D.
12 ohms