A technician installs a new sound card but no sound can be heard. Which of the following utilities can be used to see an error?（）

A.A
B.B
C.G
D.N

A. Orange/white, orange, green/white, blue, blue/white, green, brown/white, brown
B. Blue, blue/white, orange/white, orange, brown/white, brown, green/white, green
C. Green/white, green, orange/white, blue, blue/white, orange, brown/white, brown
D. Orange/white, orange, brown/white, brown, green/white, green, blue, blue/white

A. Biometric device
B. Mouse
C. Camcorder
D. Infrared scanner