Principle: A party who receives a benefit at the expense of another party is required to make restitution to prevent unjust enrichment.
Facts: Anita hires a construction company, Best Builders, to renovate her swimming pool. The contract states that Best Builders will install new water purifiers for a total cost of INR 10,000. During the renovation, Best Builders installs high-end purifiers worth INR 15,000 instead of the standard ones specified in the contract. When the project is completed, Anita enjoys the upgraded purifiers but only pays the agreed-upon amount of INR 10,000.
Select the most appropriate option :