Coca-Cola Plans to Launch a New Version of Diet Coke

Coca-Cola plans to launch a new version of Diet Coke called Diet Coke Plus. The drink will be similar to the current Diet Coke, but it will be fortified with vitamins and minerals. The Diet Coke Plus would be a part of which of the following new products based categories?

A) New-to-the-world products
B) New category entries
C) Product improvements
D) Repositionings