Which of the following statements is correct?
A. Up to 10% of human tumours have a viral risk factor
B. Up to 40% of human tumours have a viral risk factor
C. Up to 30% of human tumours have a viral risk factor
D. Up to 20% of human tumours have a viral risk factor
Answer:D
Which of the following statements is correct?
A. Up to 10% of human tumours have a viral risk factor B. Up to 40% of human tumours have a viral risk factor C. Up to 30% of human tumours have a viral risk factor D. Up to 20% of human tumours have a viral risk factor