Which of the following is true regarding various stages of lung cancer and the possibility of having distant metastases and occult disease?

Q. Which of the following is true regarding various stages of lung cancer and the possibility of having distant metastases and occult disease?

A.            For clinical stage I by CT the incidence of distant meta is 5%

B.            For clinical stage II the incidence of distant mets is 15-20%

C.            For clinical stage III the incidence of occult disease is 25-30%

D.            all of the above

Answer: all of the above