Elasticity of demand is $E(p)=-\frac{p{f}^{\text{'}}(p)}{f(p)}.$ Match each situation with the proper values of $E(p).$

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A small decrease in unit price will cause revenue to increase.

A small increase in the unit price will cause revenue to decrease.

A small increase or decrease in unit price will causes revenue to decrease.

A small increase in unit price will cause revenue to

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$E(p)>1$

$E(p)<mn>1</mn>$

$E(p)=1$