Which one of the following habits is found more often

The reasons for L-shaped long run average cost curve is/are

The positive cross elasticity of demand between two products means the two products

Pricing decision includes

Diamond-water paradox establishes the fact that

Shifts in demand curve as shown in the figure below represents

When price elasticity of demand is unity, the total expenditure:

In case of Giffens goods, price effect is

If the firms under perfect competition have different costs, abnormal profits can be earned in the long run only by

The goods whose demand is not tied with the demand for some other goods are said to have 

OPEC is an example of