Which of the Following Is True

Which of the following is true?

A) When deciding whether a measurement is a ratio or interval, the attribute that is being measured is irrelevant.
B) Interval measurements can only have negative values and cannot be subjected to some arithmetic operations.
C) For a measurement to be of value to a therapist, the measure should be both reliable (reproducible) and valid (meaningful) .
D) Categorical measurements are considered ordinal if being assigned to multiple categories.