If the price of a product does not change immediately, which of the following will cause an initial shortage of a product?

Select one:

a.

An increase in the demand or an increase in the supply.

b.

A change in the quantity supplied.

c.

A decrease in the demand or an increase in the supply.

d.

A decrease in the demand or a decrease in the supply.

e.

An increase in the demand or a decrease in the supply.