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At what level of input has diminishing marginal returns set in?



At what level of input has diminishing marginal returns set in?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 3
  • B 16
  • C 20
  • D 22
Correct Answer: Option A
Explanation:

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