Answer:
Option A.
Step-by-step explanation:
A substitute, is the correct answer.
Substitute goods are those goods which are used for the same purpose. In that, if the prices of one good increases it will lead the demand of other good to be increased. For example, Pepsi and Coca Cola. If there is an increase in the price of Pepsi, then the demand for Coca Cola will increase because Pepsi has become more expensive to the consumers.