Answer:
A) Product Line
Step-by-step explanation:
Product line Strategy is a process whereby different set of related products are differentiated based on features and prices thereby setting products at different price levels in order to allow customer pick the product that most likely fit their needs and purchase power.
For example, Apple offers the iPhone XS and the iPhone XR as premium options. The iPhone 8 and iPhone 7 are then included as additional options. They are all the same product that is Apple product but at varying prices and features.