An empirical economic study estimates that the income elasticity of demand (YED\text{YED}YED) for public bus transit in a metropolitan area is -0.35, while its cross-price elasticity of demand (XED\text{XED}XED) with respect to the price of petrol is +0.65.
Which of the following combinations correctly classifies public bus transit and describes its relationship with petrol?
Classification of public bus transit: Normal good; Relationship with petrol: Complements
Classification of public bus transit: Inferior good; Relationship with petrol: Substitutes
Classification of public bus transit: Inferior good; Relationship with petrol: Complements
Classification of public bus transit: Normal good; Relationship with petrol: Substitutes
