Task: Text Completion
Input (English): [header] How to activate call forwarding [title] Sign up. [step] Call forwarding isn't usually included as a standard feature in most phone service plans. Call your provider and ask to sign up for call forwarding if you'd like to use it. <sep> (A) Call your provider first, working from home or using a computer. [substeps] Call during the week if you want to utilize a regular communication protocol. (B) Mobile calls will receive your call only after all calls are set. [substeps] Using a subscription to the popular supported providers provides additional mobile data and provides the software with the most mobile apps. (C) [substeps] The software help office allows you to set up call forwarding or a feature when it's on your smartphone. The app lets you setup calls in your device's software menu. (D) [substeps] There are two types of call forwarding: conditional and unconditional. Conditional call forwarding will only forward a call from the activated phone to the target phone if the activated phone is busy or nobody picks up after a certain number of rings.
Output (English): D