1. Which of the following statements about the causation of cancer are true? A Environmental factors

1. Which of the following statements about the causation of cancer are true? A Environmental factors have been implicated in more than 80 per cent of cancers. B HPV infection is associated with cancer of the penis. C Familial breast cancer involving BRCA1 and BRCA2 has an autosomal recessive inheritance. D Wood dust is associated with paranasal sinus cancers. E Pituitary tumours are a part of MEN type 2A syndrome. 2. Which of the following cancers is associated with obesity? A Breast B Kidney C Colon D Oesophagus E Endometrium.