In an environment where several processes may open the same file at the same time, $\_\_\_\_.$

Select one:

a$.$

the operating system typically uses only one internal table to keep track of open files

b$.$

the operating system typically uses two internal tables called the system$-$wide and per$-$disk tables to keep track of open files

c$.$

the operating system typically uses three internal tables called the system$-$wide, per$-$disk, and per$-$partition tables to keep track of open files

d$.$

the operating system typically uses two internal tables called the system$-$wide and per$-$process tables to keep track of open files