Angela and Vanessa are two friend who always eat ice cream together. The regular price of ice cream is $1 per spoon. Angela always orders 3 spoons and Vanessa orders 5 spoons. Every Tuesday, the ice cream is 50% off. Angela orders 6 spoons and Vanessa order 7 spoons on Tuesday. Which of the following statement is incorrect? O The total quantity of ice cream demanded by Angela and Vanessa increased by 5 on every Tuesday. O Angela's individual demand curve has a downward sloping. O The promotion on every Tuesday shift out the demand curve. O Vanessa's individual demand curve isn't same as Angela's.

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