The nurse is conducting a seminar at the community center on the importance of cancer detection. Which screening guideline is recommended for the early detection of cancer?
1) Yearly fecal occult blood test for adults over 45 years
2) Yearly mammography for patients older than 50 years
3) Colonoscopy at the age of 30 years and every 5 years thereafter
4) Yearly digital rectal examination (DRE) for men older than 30 years