Characteristics of Fecal Occult Blood (FOB) Include Which of the Following

Multiple Choice

Characteristics of fecal occult blood (FOB) include which of the following? Select all that apply.

A) It can originate from any part of the digestive tract.
B) It is not observed by the patient.
C) The test for it is an invasive test.
D) The test for it is done twice a year on adults.
E) It may be a warning sign of colorectal cancer.