Which of the Ideal Criteria for a Successful Screening Program

Which of the ideal criteria for a successful screening program is satisfied by the following statement: Screening those older than 50 years using fecal occult blood testing every year and flexible sigmoidoscopy every 3-5 years have been shown to be effective strategies for screening for colon cancer?

A) The disease produces substantial mortality or morbidity.
B) Early detection improves outcome.
C) There is a feasible testing strategy.
D) Screening is acceptable in terms of costs, harms, and patient acceptance.