Among the statements given below find out which statement (s) is/are incorrect about Gram bacteria and select the appropriate code.
I. The techinique of Gram staining was introduced by Hans Christian Gram in 1874.
II. The basal body of flagellum of Gram positive bacteria has four rings of swellings.
III. The lipid content in Gram positive bacteria cell wall is very low.
IV. Escherichia coli and Salmonella are Gam negative bacteria.

Options

A. I, III and IV
B. I and II
C. Only III
D. III and IV

Answer

B