Use the Following to Answer Question

Multiple Choice

Use the following to answer question:
-(Figure: Demand and Supply of Gasoline) Use Figure: Demand and Supply of Gasoline.When the supply curve shifted from the initial equilibrium,the new intersection of supply and demand has a price of _____ and quantity of 400.This supply shift could have resulted from _____.

A) $1.50;an increase in consumers' income
B) $1.50;an improvement in refining technology
C) $2.00;an increase in the number of buyers
D) $2.00;an increase in consumers' income