Question

a designation of ___ means that a blank optical disc can be recorded to only once. a +rw b -re c -r d -xl

Explanation:

The -R designation for optical discs indicates write - once (recordable) media. +RW is rewritable, -RE is also rewritable (erasable), and -XL is not a standard optical - disc recording designation related to write - once.

Answer:

C. -R