C. It is a good way to differentiate their products to consumers.
If the price of apples increases, Supply curves for matthew's pies will decrease.
In this case, apple is the main ingredient to made the apple pies. When apple's price increased, Matthew will have less profit from the selling, he will instinctively supply it less.
<span>The credibility of a noncredible person may increase over time if people remember the message more than the reason for discounting it in the first place. This is known as the sleeper effect. The sleeper effect relates to persuasion and the gradual increase of a message's effect in coordination with a discounting cue.</span>
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