A washing machine has three temperature bands for different kinds of fabrics: fragile fabrics are washed at temperatures between 15 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.
Which of the following contains only values that are in different equivalence partitions?
A. 15, 30, 60
B. 20, 35, 60
C. 25, 45, 75
D. 12, 35, 55
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