Where can Collect On Delivery (COD) articles be mailed?

Collect On Delivery (COD) articles are specifically designed for items that require the recipient to pay for the property upon delivery. The correct answer highlights that these types of parcels can be mailed at a post office or through a rural letter carrier. This option accurately reflects the operational guidelines set by the postal service, ensuring that the payment process is handled correctly and securely in these locations.

When sending COD mail, it's essential that the process is managed through official postal channels, such as a post office or via a rural letter carrier, as these services are trained and equipped to handle payment collections. This ensures both the sender's and recipient's interests are protected through established procedures.

The other options hint at potentially inaccurate mailing methods. For instance, limiting COD mailing to only home addresses or designated retail stores isn’t aligned with postal regulations. Similarly, suggesting that articles can be mailed from any location within the country fails to acknowledge that official postal services are necessary for the COD process. The accuracy and security involved in these transactions reinforce why option B is the appropriate choice.