Concept: In management, Efficiency and Effectiveness are two sides of the same coin.
• Effectiveness is concerned with doing the right task and achieving the end goal.
• Efficiency is concerned with doing the task correctly with minimum resource wastage (cost-benefit analysis).
Analyzing the cost-benefit aspect.
Since the question specifically highlights ``minimum cost,'' it refers to the input-output ratio. Efficiency focuses on deriving the maximum output from the least amount of inputs.