A company has a budget constraint of $$3,500,000$ and is evaluating four projects: Project J: NPV $$1,000,000,$ Investment $$1,500,000$; Project K: NPV $$800,000,$ Investment $$1,000,000$; Project L: NPV $$1,200,000,$ Investment $$2,000,000$; Project M: NPV $$500,000,$ Investment $$1,200,000.$ Determine the optimal combination of projects that maximizes NPV under the budget constraint.

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