Oatly, best known for its oat$-$based milk alternative, recently launched two new products. One is a chocolate$-$flavored oat milk, and the other is a line of dairy$-$free oat$-$based ice creams.

Which of the following correctly identifies the type of brand extension for each product?

$$ Both are line extensions because they expand the oat milk product line

$$ Both are category extensions because they introduce new products under the Oatly brand

$$ Chocolate oat milk is a line extension; oat$-$based ice cream is a category extension

$$ Chocolate oat milk is a category extension; oat$-$based ice cream is a line extension