Question: a . Write code in the app to enforce this constraint. b . Define the price attribute as a constant. c . The constraint cannot

a. Write code in the app to enforce this constraint.
b. Define the price attribute as a constant.
c. The constraint cannot be enforced using the ER model.
d. Add the price attribute to the Drug entity set and eliminate the price from the Sell relationship set.
e. No design change is necessary.

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