Which of the following is a form of urban bais ?

I- Government may set price floors on food and price ceilings for industrial goods
II- Tax incentive and subsidies to infant industry
III- Tariff and quota protection for industry
IV- Spending more for education training housing, health and transport in urban areas than in rural areas.
A. I, II , III only
B. I, II and IV only
C. II, III and IV only
D. I, II, III and IV