At a price of $11, quantity demanded is 90; and at a price of $9, quantity demanded is 110. Since total revenue ________ by the price decrease, demand must be ________.
A) is increased; elastic
B) is decreased; inelastic
C) is unchanged; unit elastic
D) is unchanged; elastic

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The Answer of At a price of $11, quantity demanded is 90; and at a price of $9, quantity demanded is 110. Since total revenue ________ by the price decrease, demand must be ________.
A) is increased; elastic
B) is decreased; inelastic
C) is unchanged; unit elastic
D) is unchanged; elastic

At a Price of $11, Quantity Demanded Is 90; and at a Price