Which two are correct statements about printer classes? (Choose two)

A.
A printer class can NOT include printers from different manufactures.

B.
A printer class must be defined before any printers can be added to it.

C.
A printer class is a way of grouping individual printers for load balancing.

D.
Printer priority within a class can be defined by adding the printers to the class in descending order priority.

Explanation:

The following creates a class containing two printers.
lpadmin -p "fast-printer" -c supports
lpadmin -p "slow-printer" -c supports
Prints will be sent to the printer fast-printer if it is not busy, otherwise they will go to slow-printer. This is useful for load balancing print jobs.