The output transformer used in a power amplifier is a/an Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â transformer

The output transformer used in a power amplifier is a/an Â Â Â

1.	The output transformer used in a power amplifier is a/an Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â transformer
A.	1:1 ratio
B.	step-down
C.	step-up
D.	isolation
Answer» C. step-up