Answer: See explanation
Step-by-step explanation:
According to the theory of patterns of specialization and sustainable trade (PSST), the demand of buyers on the demand side regarding a particular good may not be in synchrony with what is prevalent on the supply side.
Therefore, in a situation like this, even though the aggregate demand is constant, there will be a reduction in sales. The theory further posits that trades occur as a result of preference in buying and that specialization is required in order for an economy to be able to sustain its trade patterns.