An Automated Air-Conditioner Is Programmed to Turn Its Heating Unit

Multiple Choice

An automated air-conditioner is programmed to turn its heating unit on when the temperature falls below 17 and to turn its refrigeration unit on when the temperature exceeds 26. The air-conditioner is designed to operate at temperatures between -10 and +40. Given the above specification, the temperature exceeds 26. The air-conditioner is designed to operate at temperatures between -10 and +40? Given the above specification, which of the following sets of values shows that the equivalence partition test design technique has been used correctly?

A) -11 Deg. C, -1 Deg. C, 18 Deg. C, 27 Deg. C, 51 Deg. C
B) -11 Deg. C, -1 Deg. C, 12 Deg. C, 18 Deg. C, 27 Deg. C, 51 Deg. C
C) -11 Deg. C, 18 Deg. C, 51 Deg. C
D) -1 Deg. C, 12 Deg. C, 18 Deg. C, 27 Deg. C