Annie's Inc., that produces vinegar for cooking purposes, identified new uses for its product and started promoting it as a fabric softener and a cleansing product. The company started selling the same product in different packages modified for different types of uses. This strategy used by Annie's to increase the sales of its product is an example of a _____ strategy.
a. brand extension
b. line engagement
c. market penetration
d. product diversification
Answer: C