Select wrong statement.
(1) The viroids were discovered by D.J. lvanowski.
(2) W.M. Stanley showed that viruses could be crystallized.
(3) The term 'contagium vivum fluidum' was coined by M.W. Beijerinek.
(4) Mosaic disease in tobacco and AIDS in human being are caused by viruses.
(1) All statements are correct except the statement (1), which can be corrected as Viroids were discovered by TO Diener in 1971 as a new infectious agent that was smaller than virus.