If two goods A and B are complements, their cross-price elasticity should be

1. Positive because when the price of good A increases, demand for good B decreases
2. Negative because when the price of good A increases, demand for good B decreases
3. Positivebecause when the price of good A increases,demand for good B increases
4. Negative because when the price of good A increases, demand for good B increases