One hundred clinics are considered using a DEA model. The efficiency score for Unit 1, Unit 2 and Unit 3 are all 100%. All other units have scores below 100%. Units 1, 2, 3, and 4 all have identical levels of outputs but differ in the levels of 2 inputs. Which of the follow CANNOT be true for Unit 4? Group of answer choices If Unit 4 changes it input levels to match Unit 2 it will be 100% efficient If Unit 4 changes it input levels to match Unit 3 it will be 100% efficient A composite unit which has input levels that are a linear combination of the levels for Units 2 and 3 will be 100% efficient Unit 4 can only be 100% efficient if it matches either Unit 1, Unit 2 or Unit 3 exactly None of these statements are true