Enteroliths are calcifications that form in the gut of horses. the stones can cause considerable morbidity and mortality. a study was conducted to investigate factors such as diet and environment that may be related to the formation of enteroliths. housing is a variable that is coded 1 for horses that live in a stall, 2 for horses that have access to a small paddock, 3 for horses that have a large paddock : a) categorical variable. b) quantitative variablec) numerical category. d) none of the answer options is correct.