In this section, you need to add two classes in c$++,$ as shown in Figure $2$ below:

$1.$ LandPhone class represents the Phone line at home, this class composing the

classes; PhoneDetails, Person, and ServiceProvider.

$2.$ Internet class, this class is composing the classes; ServiceProvider, and LandPhone.

$3.$ You need to make sure that you are using proper constructors to instantiate

both classes.