Which of the following statements is true regarding single-user and multi-user mode?
1) Single-user mode allows only one user to access the system at a time, while multi-user mode allows multiple users to access the system simultaneously.
2) Single-user mode is faster than multi-user mode.
3) Single-user mode is more secure than multi-user mode.
4) Single-user mode and multi-user mode have the same features and capabilities.