Which of the following contains only values that are in different equivalence partitions?

A washing machine has three temperature bands for different kinds of fabrics: — Fragile fabrics are washed at temperatures between 10 and 30 degrees Celsius; — Normal fabrics are washed at temperatures between 31 and 60 degrees Celsius; — Heavily soiled and tough fabrics are washed at temperatures between 61 and 100 degrees Celsius.

  • A. 10, 31, 55
  • B. 20, 65, 90
  • C. 25, 45, 77
  • D. 15, 30, 60

Answer: Option C