Answer:
b. is a set of all frames that are currently unallocated to any process
Step-by-step explanation:
The free frame list is the list that used for all kind of the frames that presently non-allocated to any kind or process
Therefore as per the given situation, the correct option is b as it fits to the current situation
Hence, all the other options are wrong
So, only option b is correct
The same is to be considered