Which option in the following best explains Signals with reference to Linux Interprocess Communication (LPC)?

Which option in the following best explains Signals with reference to Linux Interprocess Communication (LPC)?

مندرجہ ذیل میں کون سا آپشن لینکس انٹرپروسیس مواصلات (ایل پی سی) کے حوالے سے سگنل کی وضاحت کرتا ہے؟
Explanation

In Linux Interprocess Communication (IPC), signals are used to notify a process that a particular event has occurred.

They are asynchronous, meaning they can arrive at any time, regardless of what the process is doing.