A unit has both a serial number and a product identification number. How many characters are in the serial number?
A. 10 or 12
B. 11 or 13
C. 12 or 14
D. 10 or 15
A unit has both a serial number and a product identification number. How many characters are in the serial number?
A. 10 or 12
B. 11 or 13
C. 12 or 14
D. 10 or 15