Opportunity cost and sunk cost https://i2.wp.com/www.capitalbudgetingtechniques.com/wp-content/uploads/2016/05/Opportunity-cost-and-sunk-cost.png?fit=403%2C387&ssl=1https://i2.wp.com/www.capitalbudgetingtechniques.com/wp-content/uploads/2016/05/Opportunity-cost-and-sunk-cost.png?resize=125%2C125&ssl=1castelInvestment analysis basics