Do you agree with the following statements?Explain your answer with suitable diagram separately.

a) Decrease in Demand and Decrease in Supply at the same time will lead to a decrease in equilibrium quantity

b) With the government opening the telecommunication markets, the equilibrium price of the telecommunication services will increase.

c) If it is generally believed that the food at a fast-food restaurant is considered as "inferior good", then an increase in income will lead to an increase in the equilibrium price of the food sold at the fast-food restaurant.

d) If the price of Good A increased by 5%, the quantity demanded of Good B will be decreased by 2%.As a result, Goods A and B are substitute goods.