Answer:
A
Step-by-step explanation:
Network externality describes the effect a good or service has on a consumer when other consumers are also making use of the product
Positive network externality occurs when the marginal benefit of making use of a good increases as more users make use of the good
An example of Positive network externality is a social media platform. As there are more users on the site, you have more people to interact with.
For Annabey Inc., their growth increased when their their consumer based increased. As more people tried their product and liked it, they recommended the product to more people. this would increase their sales