Which of the Following Statements Is Correct When Talking About

Which of the following statements is correct when talking about /proc/?

A) All changes to files in /proc/ are stored in /etc/proc.d/ and restored on reboot.
B) All files within /proc/ are read-only and their contents cannot be changed.
C) All changes to files in /proc/ are immediately recognized by the kernel.
D) All files within /proc/ are only readable by the root user.