Given below is a code in a process which can provide mutual exclusivity in critical section control for a process. There is an error in the code which will render the code to fail to function properly. Which line does the error occur? do { 1. while (turn != 1) critical_section(); 3. turn = 0; 4. non_critical section(); 5. } while (1); 2. Select one: 3 OB. 1 OC5 OD 2 O E 4 Which of the statements below describe File System correctly? 1. File system deals with file contents in the form of blocks. II. File System defines a collection of functions that can be performed on files. III. One file system can accommodate two directory structures in it IV. ISO 9660 is a standard generic file system which can be used across all operating systems. Select one: OAL, II, III and IV OB. ll only OC. None of the above. OD. II, III and IV only O E I, and III only