A patient has a strong family history of non-polyposis colorectal cancer. What i

A patient has a strong family history of non-polyposis colorectal cancer. What is the best advice the nurse can give to the patient?
1. Have a genetic test to detect the presence of the genetic disorder, even though the patient may never develop cancer.
2. Teach the patient the symptoms indicating colon cancer and suggest a high fiber diet to prevent cancer.
3. Have regular colonoscopies. If the colonoscopy is abnormal, then genetic testing is indicated.
4. Have a genetic test to detect the presence of colorectal cancer so that treatment can be initiated as early as possible.