Pepsi has a strong brand equity. over the years, pepsi has introduced vanilla pepsi, lemon pepsi, pepsi one, pepsi blue, and pepsi edge. these expansions of the pepsi brand are termed:

(a) category extensions
(b) product extensions
(c) national extensions
(d) line extensions
(e) extension brands

These expansions of the Pepsi brand are termed: "(D) Line Extensions".

Explanation: The extension of the line is the creation of a new product with two fundamental characteristics: First, the product belongs to the same category in which the brand was already entering. Second, the organization continues to use the same brand that it traditionally used in that category.