Test of demand and supply

A. Which arrow in the chart defines increase in demanded quantity?

 B. What effects increase in demanded quantity?

1. Price is increasing

2. Price is decreasing

3. Incomes are increasing

4. Incomes are decreasing

C. Which arrow in the chart defines increase in supplied quantity?

D. What effects increase in supplied quantity?

1. Price is increasing

2. Price is decreasing

3. Producing costs are increasing

4. Producing costs are decreasing

E. What point in the chart is equilibrium point?