An audio amplifier is an example of _________________?

A. A resistor
B. An insulating layer
C. Mechanical output
D. None of the above

A. DIL
B. Flatpack
C. TO-5
D. None of the above

A. Thin films
B. Monolithic
C. Hybrid
D. None of the above

A. Linear signals only
B. Digital signals only
C. Both digital and linear signals
D. None of the above

A. Linear devices only
B. Digital devices only
C. Both linear and digital devices
D. None of the above

A. Thin-film
B. Hybrid
C. Thick-film
D. Monolithic