Read the following statement regarding bacteria.
I. Bacteria exchnage their genetic matter through conjugation which involve cell to cell contact.
II. Transduction in 'Salmonella is reported by Tatum and Lederberg in 1952.
III. Citrus canker disease is caused by bacteria Xanthomonas citri.
IV. Hans Christian gram's staining method is based on cell wall composition of bacteria.
Choose the correct option with true statements.
(1) I and III
(2) I, III and IV
(3) I, II, and III
(4) II and IV