Answer:
b. Decrease the price of the soda.
c. Increase the quality of the pizza
Explanation:
There are two goods under the demand's cross-price elasticity, i.e. substitute goods and complementary products.
The substitute goods demonstrate the positive relationship between good price B and good demand A. That means if good B prices go down. The demand for good A then decreases
Whereas it indicates a negative relation between the price of good B and the demand of good A in the case of complimentary products. That means if good B prices go down. The demand for good A then increases
